DELL XPS 13 9345 Qualcomm Snapdragon X1E-80-100 Laptop 34 cm (13.4") Full HD+ 32 GB LPDDR5x-SDRAM 1 TB SSD Wi-Fi 7 (802.11be) Windows 11 Pro Grey

Quick Code: Q1876747 MPN: R41PJ
£1564.99

In Stock

Key Features

  • The fastest, most intelligent Windows PCs ever.
  • Windows 11 Pro 64-bit
  • 34.0 cm (13.37") Full HD+ 1920 x 1200 WVA
  • 32GB LPDDR5x-SDRAM & 1000GB SSD

Overview



13-inch laptop with game-changing performance from on-device AI and Snapdragon® X Elite, plus groundbreaking multi-day battery life.




At-a-glance



  • 12-core Snapdragon® X Elite Dual Core Boost
    Optimise demanding workloads with the Snapdragon® X Elite processor, which delivers more performance than competitor laptops without Dual Core Boost.

    Qualcomm® Adreno™ GPU
    Stream, share and create from anywhere with stunning graphics that invite entertainment immersion.

    Qualcomm® Hexagon™ NPU
    AI-dedicated chip improves power efficiency, extends battery life, emits less heat and runs quietly. Supports 45 TOPS.

  • 32GB LPDDR5x-SDRAM & 1000GB SSD

  • 34.0 cm (13.37") Full HD+ 1920 x 1200 WVA

  • Anytime, anywhere personalised support. AI-powered issue detection and resolution, plus repair coverage you can trust.

  • Crafted with machined (CNC) aluminum and Gorilla® Glass 3 to deliver a strong, lightweight laptop. The XPS 13 is available in Graphite and Platinum with tone-on-tone finishes for an elegant, minimalistic design.

  • Design innovation
    Crafted to meet your environmental goals, this laptop is designed with at least 20% recycled materials and an innovative combination of recycled and low emissions aluminum that reduces the carbon footprint of the material by 88%.

    Elevated standards
    This laptop is certified ENERGY STAR® 8.0 and meets the highest criteria with EPEAT Gold registration now with Climate+ designation. With Climate+ this laptop has met the industry’s best practices for decarbonisation.

    Low impact packaging
    This laptop ships in packaging made with 100% recycled or renewable content that is also 100% recyclable.

  • Do
    Get things done faster and find time to focus on what matters most to you with Copilot, your personal AI assistant. Make your online shopping easier, plan your next vacation or kickstart research for your class project in just a matter of minutes. With Microsoft 365 you can stay organised, collaborate and create content like a pro.

    Create
    Help bring your creative aspirations to life with custom images through Cocreator. Enabled with advanced AI, you can now transform rough sketches with text and drawing prompts and make your vision come to life, just the way you want it.

    Connect
    No need for extra lights or soundproof rooms — new Windows Studio effects help you look and sound your best. Voice Focus filters out background noise and makes sure you are heard. This AI-enabled feature improves lighting and blurs distractions, so you’re always the focus.
    With Live Captions, you stay connected and never miss a conversation. Instantly translate your video calls or movies from any app or video platform into English subtitles, in real time.

    Find
    Using simple prompts and natural language, Recall instantly scans apps, files, emails and websites you’ve seen before to retrieve exactly the content you’re looking for.

  • Look and sound your best on video calls with a high-resolution 1080p FHD 2MP webcam. Intelligent webcam and audio reduce background noise and show crisp detail even in low light.

    Windows Studio Effects with AI-powered features keep you in focus with Background Blur and Automatic Framing, and adjusts your gaze to help you stay connected with Eye Contact.

  • Qualcomm Snapdragon X1E-80-100 (42MB Cache, 3.4GHz)

  • Quiet
    Reduce distractions with lower fan noise.

    Ultra performance
    Boost performance with improved processor speeds.

    Cool
    Keep your system cooler with increased fan speed.

    Optimised
    Enable the best balance of performance and thermals.

  • Seamless glass touchpad
    A haptic touchpad provides precise responsive feedback. Sleek glass across the palm rest feels friendlier to the touch.

    Comfortable keyboard
    Larger, deeper, touch-friendly keycaps and less space between keys make typing more efficient.

    Touch function row
    Toggle between media and function keys easily and bring forward only the icons you want.

  • Set your priorities and organise your navigation with MyDell, our AI-based optimisation software that automatically fine-tunes your PC for excellent audio, video, battery and performance. Customise XPS settings, set up software and more in one convenient location.

    Connect your laptop to any phone. Easily transfer files and photos, make calls, text and manage photo notifications.

  • Snapdragon compute platforms run all versions of Windows 11 on Arm®.

  • Stay connected and do more with Microsoft Teams and Microsoft Studio Effects. Now you can eliminate distracting sights and sounds and elevate your video calls experience.

  • The fastest, most intelligent Windows PCs ever.

  • The first Copilot+ XPS has powerful, on-device AI that delivers cutting-edge responsiveness and unmatched speed for navigating demanding multitasking workloads, enhanced security and efficiency in our thinnest and lightest XPS. The XPS 13 powered by Snapdragon® X Elite, effortlessly tackles complex workloads and offers groundbreaking multi-day battery life; the longest runtime in its class.

  • Watch content come alive with sharp detail and true-to-life colour, and rich, cinematic sound.

    Crisp visuals with 13.4-inch optional touch-capable InfinityEdge display, up to 2880 x 1800 resolution.

    Vivid colour, sharp contrast, and rich details with Dolby Vision and vibrant colours against a true black background with an optional OLED display

    Moving content is smoother with up to 120Hz variable refresh rate, which improves battery life when viewing static images.

    World’s first laptop with a Tandem OLED display, delivering higher brightness and lower power consumption.

    Enjoy 360-degree spatial sound with Dolby Atmos and 8W quad-speaker design.

    Eyesafe® technology reduces blue light without compromising colour.

  • Whether it’s productivity, browsers, video conferencing and collaboration or multimedia, Snapdragon compute platforms support many applications so you can maintain mobility and productivity across any task.

  • Windows 11 Pro 64-bit




Reasons to buy


  • 12-core Snapdragon® X Elite Dual Core Boost
    Optimise demanding workloads with the Snapdragon® X Elite processor, which delivers more performance than competitor laptops without Dual Core Boost.

    Qualcomm® Adreno™ GPU
    Stream, share and create from anywhere with stunning graphics that invite entertainment immersion.

    Qualcomm® Hexagon™ NPU
    AI-dedicated chip improves power efficiency, extends battery life, emits less heat and runs quietly. Supports 45 TOPS.
  • 32GB LPDDR5x-SDRAM & 1000GB SSD
  • 34.0 cm (13.37") Full HD+ 1920 x 1200 WVA
  • Anytime, anywhere personalised support. AI-powered issue detection and resolution, plus repair coverage you can trust.
  • Crafted with machined (CNC) aluminum and Gorilla® Glass 3 to deliver a strong, lightweight laptop. The XPS 13 is available in Graphite and Platinum with tone-on-tone finishes for an elegant, minimalistic design.
  • Design innovation
    Crafted to meet your environmental goals, this laptop is designed with at least 20% recycled materials and an innovative combination of recycled and low emissions aluminum that reduces the carbon footprint of the material by 88%.

    Elevated standards
    This laptop is certified ENERGY STAR® 8.0 and meets the highest criteria with EPEAT Gold registration now with Climate+ designation. With Climate+ this laptop has met the industry’s best practices for decarbonisation.

    Low impact packaging
    This laptop ships in packaging made with 100% recycled or renewable content that is also 100% recyclable.
  • Do
    Get things done faster and find time to focus on what matters most to you with Copilot, your personal AI assistant. Make your online shopping easier, plan your next vacation or kickstart research for your class project in just a matter of minutes. With Microsoft 365 you can stay organised, collaborate and create content like a pro.

    Create
    Help bring your creative aspirations to life with custom images through Cocreator. Enabled with advanced AI, you can now transform rough sketches with text and drawing prompts and make your vision come to life, just the way you want it.

    Connect
    No need for extra lights or soundproof rooms — new Windows Studio effects help you look and sound your best. Voice Focus filters out background noise and makes sure you are heard. This AI-enabled feature improves lighting and blurs distractions, so you’re always the focus.
    With Live Captions, you stay connected and never miss a conversation. Instantly translate your video calls or movies from any app or video platform into English subtitles, in real time.

    Find
    Using simple prompts and natural language, Recall instantly scans apps, files, emails and websites you’ve seen before to retrieve exactly the content you’re looking for.
  • Look and sound your best on video calls with a high-resolution 1080p FHD 2MP webcam. Intelligent webcam and audio reduce background noise and show crisp detail even in low light.

    Windows Studio Effects with AI-powered features keep you in focus with Background Blur and Automatic Framing, and adjusts your gaze to help you stay connected with Eye Contact.
  • Qualcomm Snapdragon X1E-80-100 (42MB Cache, 3.4GHz)
  • Quiet
    Reduce distractions with lower fan noise.

    Ultra performance
    Boost performance with improved processor speeds.

    Cool
    Keep your system cooler with increased fan speed.

    Optimised
    Enable the best balance of performance and thermals.
  • Seamless glass touchpad
    A haptic touchpad provides precise responsive feedback. Sleek glass across the palm rest feels friendlier to the touch.

    Comfortable keyboard
    Larger, deeper, touch-friendly keycaps and less space between keys make typing more efficient.

    Touch function row
    Toggle between media and function keys easily and bring forward only the icons you want.
  • Set your priorities and organise your navigation with MyDell, our AI-based optimisation software that automatically fine-tunes your PC for excellent audio, video, battery and performance. Customise XPS settings, set up software and more in one convenient location.

    Connect your laptop to any phone. Easily transfer files and photos, make calls, text and manage photo notifications.
  • Snapdragon compute platforms run all versions of Windows 11 on Arm®.
  • Stay connected and do more with Microsoft Teams and Microsoft Studio Effects. Now you can eliminate distracting sights and sounds and elevate your video calls experience.
  • The fastest, most intelligent Windows PCs ever.
  • The first Copilot+ XPS has powerful, on-device AI that delivers cutting-edge responsiveness and unmatched speed for navigating demanding multitasking workloads, enhanced security and efficiency in our thinnest and lightest XPS. The XPS 13 powered by Snapdragon® X Elite, effortlessly tackles complex workloads and offers groundbreaking multi-day battery life; the longest runtime in its class.
  • Watch content come alive with sharp detail and true-to-life colour, and rich, cinematic sound.

    Crisp visuals with 13.4-inch optional touch-capable InfinityEdge display, up to 2880 x 1800 resolution.

    Vivid colour, sharp contrast, and rich details with Dolby Vision and vibrant colours against a true black background with an optional OLED display

    Moving content is smoother with up to 120Hz variable refresh rate, which improves battery life when viewing static images.

    World’s first laptop with a Tandem OLED display, delivering higher brightness and lower power consumption.

    Enjoy 360-degree spatial sound with Dolby Atmos and 8W quad-speaker design.

    Eyesafe® technology reduces blue light without compromising colour.
  • Whether it’s productivity, browsers, video conferencing and collaboration or multimedia, Snapdragon compute platforms support many applications so you can maintain mobility and productivity across any task.
  • Windows 11 Pro 64-bit

Specification


Technical Description: DELL XPS 13 9345 Qualcomm Snapdragon X1E-80-100 Laptop 34 cm (13.4") Full HD+ 32 GB LPDDR5x-SDRAM 1 TB SSD Wi-Fi 7 (802.11be) Windows 11 Pro Grey

Audio
Built-in microphone:Microphone that is found inside the product.
Yes
Speaker power:
2 W
Number of built-in speakers:
4
Audio chip:
Qualcomm WSA8845

Battery
Battery weight:
219 g
Battery capacity:A measure of the charge stored by the battery. Determined by the mass of active material contained in the battery.
55 Wh
Battery voltage:The voltage (V) of the battery.
11.55 V
Number of battery cells:
3
Battery technology:The type of battery in the device, e.g. nickel–cadmium (NiCd).
Lithium-Ion (Li-Ion)

Camera
Infrared (IR) camera:
Yes
Video capturing speed:
30 fps
Front camera HD type:
Full HD
Front camera resolution:
1920 x 1080 pixels
Front camera resolution (numeric):
2.07 MP
Front camera:Camera at the front of the product.
Yes

Design
Introduction year:
2024
Market positioning:
Premium
Housing material:
Aluminium
Form factor:The shape or design of the product.
Clamshell
Product colour:
Grey
Product type:The sub-category of the product.
Laptop

Display
Eyesafe technology:
Yes
Contrast ratio (typical):The difference in light intensity between the brightest white and the darkest black.
2000:1
Maximum refresh rate:
120 Hz
Colour gamut:
100%
Display diagonal (metric):This is the size of the display screen, measured diagonally.
33.96 cm
Low Blue Light technology:
Yes
RGB colour space:
sRGB
Pixel density:
169.3 ppi
Display brightness:Brightness is the amount of radiating light emitted from the screen. The brightness rating is measured in candellas per square meter, commonly known as 'nits'.
500 cd/m²
Display bezel technology:
InfinityEdge
Anti-glare screen:Always gives an optimal view, even in direct sunlight.
Yes
LED backlight:A backlight is a form of illumination used in liquid crystal displays (LCDs). One type of backlight is made by LEDs, which can be either white or RGB (red green blue). White LEDs are used most often in notebooks and desktop screens, and in virtually all mobile LCD screens. RGB LEDs for backlighting are found in high-end color proofing displays such as HP DreamColor LP2480zx monitor or selected HP EliteBook notebooks, as well as newer consumer grade displays such as Dell's Studio series laptops which have an optional RGB LED display.
Yes
Native aspect ratio:The aspect ratio is the ratio of the width of an image to its height. The native aspect ratio is the one which the projector/display is particularly designed for. Images shown in native aspect ratio will utilize the entire resolution of the display and achieve maximum brightness. Images shown in other than native aspect ratio will always have less resolution and less brightness than images shown in native aspect ratio.
16:10
Panel type:
WVA
HD type:Type of supported High Definition (e.g. Full HD, 4K Ultra HD).
Full HD+
Touchscreen:A screen of a laptop, smartphone, etc., that responds to touch so you can control the interface using your fingers.
No
Display resolution:The number of distinct pixels in each dimension that can be displayed. It is usually quoted as width × height, with the units in pixels: for example, "1024 × 768" means the width is 1024 pixels and the height is 768 pixels. The higher the number of pixels, the sharper the image.
1920 x 1200 pixels
Display diagonal:Size of the display for this product, measured diagonally, usually in inches.
34 cm (13.4")

Graphics
On-board graphics card model:
Qualcomm Adreno GPU
Discrete graphics card model:
Not available
Discrete graphics card:
No
On-board graphics card:
Yes

Keyboard
Copilot key:
Yes
Touch Bar:
Yes
Keyboard backlit:
Yes
Numeric keypad:Small, palm-sized, seventeen key section of a computer keyboard, usually on the very far right. The numeric keypad features digits 0 to 9, addition (+), subtraction (-), multiplication (*) and division (/) symbols, a decimal point (.) and Num Lock and Enter keys. Laptop keyboards often do not have a numpad, but may provide numpad input by holding a modifier key (typically labelled "Fn") and operating keys on the standard keyboard.
No
Keyboard language:The letters which are marked on the keys for convenience of the keyboard usage with specific language.
UK English
Pointing device:
Touchpad

Memory
Memory channels:
Dual-channel
Memory data transfer rate:
8448 MT/s
Maximum internal memory:The maximum internal memory which is available in the product.
32 GB
Memory form factor:Design of the memory e.g. 240-pin DIMM, SO-DIMM.
On-board
Internal memory type:The type of internal memory such as RAM, GDDR5.
LPDDR5x-SDRAM
Internal memory:A computer's memory which is directly accessible to the CPU.
32 GB

Network
Bluetooth:Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.
Yes
WLAN controller manufacturer:
Qualcomm
WLAN controller model:
Qualcomm FastConnect 7800
Antenna type:Type of antenna, also known an aerial, e.g. external, internal.
2x2
Wi-Fi data rate (max):
5760 Mbit/s
Wi-Fi band:
Tri-band (2.4 GHz / 5 GHz / 6 GHz)
Wi-Fi standards:The type of wireless local area network (LAN). It can be ad-hoc, where units in a network communicate peer-to-peer, or Infrastructure, where units communicate with each other via an access point A LAN interconnects computers in a small area e.g. home, school or office.
802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be)
Top Wi-Fi standard:
Wi-Fi 7 (802.11be)
Mobile network connection:
No

Networking
Bluetooth:Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.
Yes
WLAN controller manufacturer:
Qualcomm
WLAN controller model:
Qualcomm FastConnect 7800
Antenna type:Type of antenna, also known an aerial, e.g. external, internal.
2x2
Wi-Fi data rate (max):
5760 Mbit/s
Wi-Fi band:
Tri-band (2.4 GHz / 5 GHz / 6 GHz)
Wi-Fi standards:The type of wireless local area network (LAN). It can be ad-hoc, where units in a network communicate peer-to-peer, or Infrastructure, where units communicate with each other via an access point A LAN interconnects computers in a small area e.g. home, school or office.
802.11a, 802.11b, 802.11g, Wi-Fi 4 (802.11n), Wi-Fi 5 (802.11ac), Wi-Fi 6E (802.11ax), Wi-Fi 7 (802.11be)
Top Wi-Fi standard:
Wi-Fi 7 (802.11be)
Mobile network connection:
No

Neural processor unit (NPU)
NPU performance up to:
45 TOPs
Neural processor unit (NPU):
Qualcomm Hexagon

Operating system/software
Copilot+ PC:
Yes
Microsoft Copilot:
Yes
Bundled software:Software distributed with another product such as a piece of computer hardware or other electronic device, or a group of software packages which are sold together. A software suite is an example of bundled software, as is software which is pre-installed on a new computer.
Windows System Driver
Trial software:
McAfee Business Protection 1-year,Activate Your Microsoft 365 For A 30 Day Trial
Operating system language:
German, Dutch, English, French, Italian
Operating system architecture:The way in which the operating system of a computer/smartphone (32-bit/64-bit) is set up.
64-bit
Operating system installed:Type of operating system on a device e.g. IOS on Apple devices, Android for mobile devices.
Windows 11 Pro

Operational conditions
Non-operating vibration:Environmental requirements for vibration in non-operating mode
1.3 G
Operating vibration:Environmental requirements for vibration in operating mode
0.66 G
Non-operating shock:Environmental requirements for optimal protection from impact in non-operating mode
160 G
Operating shock:Environmental requirements for optimal protection from impact in operating mode
110 G
Non-operating altitude:
-15.2 - 10668 m
Operating altitude:
-15.2 - 3048 m
Storage relative humidity (H-H):
0 - 95%
Operating relative humidity (H-H):
10 - 90%
Storage temperature (T-T):The minimum and maximum temperatures at which the product can be safely stored.
-30 - 65 °C
Operating temperature (T-T):The minimum and maximum temperatures at which the product can be safely operated.
0 - 35 °C

Packaging content
AC adapter included:
Yes

Performance
Ambient light sensor:
Yes
Hall sensor:
Yes

Ports & interfaces
USB Type-C DisplayPort Alternate Mode:
Yes
HDMI ports quantity:The number of sockets (ports) for HDMI connections. HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards.
0
USB4 Gen 3x2 ports quantity:
2
USB 3.2 Gen 1 (3.1 Gen 1) Type-C ports quantity:
0
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity:
0
USB 2.0 ports quantity:Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black.
0

Power
USB charging voltage:
5,9,15,20 V
USB Power Delivery (USB PD):
Yes
USB Type-C charging port:
Yes
AC adapter output current:
3 A
AC adapter input voltage:
100 - 240 V
AC adapter frequency:
50/60 Hz
AC adapter power:
60 W

Processor
Processor cache:
42 MB
Efficient cores:
4
Performance cores:
8
Processor frequency:The speed that the microprocessor executes each instruction or each vibration of the clock. The CPU requires a fixed number of clock ticks, or cycles, to execute each instruction. The faster the clocks rate, the faster the CPU, or the faster it can execute instructions. Clock Speeds are usually determined in MHz, 1 MHz representing 1 million cycles per second, or in GHz, 1 GHz representing 1 thousand million cycles per second. The higher the CPU speed, the better a computer will perform.
3.4 GHz
Processor boost frequency:The turbo boost is an automatic, managed accelleration of the processor when one of the cores is overloaded.
4 GHz
Processor cores:The number of central processing units ('cores') in a processor. Some processors have 1 core, others have 2 (e.g. Intel Core Duo) or more (e.g. the Intel Xeon E7-2850 has 10 cores).
12
Processor model:The model number for the processor in a computer.
X1E-80-100
Processor generation:
Snapdragon X Elite (X1E)
Processor family:A family of processors is a group of processors produced by one company over a short period of time e.g. Intel Pentium processors.
Qualcomm Snapdragon
Processor manufacturer:The manufacturer that produced the processor.
Qualcomm

Security
Password protection:The computer, smartphone etc. can only be used when the correct password is entered, therefore making it more secure.
Yes
Trusted Platform Module (TPM):
Yes
Trusted Platform Module (TPM) version:
2.0
Fingerprint reader:A scanner used to identify a person's fingerprint for security purposes. After a sample is taken, access to a computer or other system is granted if the fingerprint matches the stored sample. A PIN may also be used with the fingerprint sample.
Yes

Software
Copilot+ PC:
Yes
Microsoft Copilot:
Yes
Bundled software:Software distributed with another product such as a piece of computer hardware or other electronic device, or a group of software packages which are sold together. A software suite is an example of bundled software, as is software which is pre-installed on a new computer.
Windows System Driver
Trial software:
McAfee Business Protection 1-year,Activate Your Microsoft 365 For A 30 Day Trial
Operating system language:
German, Dutch, English, French, Italian
Operating system architecture:The way in which the operating system of a computer/smartphone (32-bit/64-bit) is set up.
64-bit
Operating system installed:Type of operating system on a device e.g. IOS on Apple devices, Android for mobile devices.
Windows 11 Pro

Storage
Optical drive type:An optical drive uses laser to read optical discs such as CDs, DVDs and Blu-Ray. Some types of optical drive are: CD ROM drive, CR-RW (CD writer) drive, DVD-ROM.
No
SSD form factor:
M.2
NVMe:
Yes
SSD interface:
PCI Express 4.0
SSD capacity:
1 TB
Number of SSDs installed:
1
Total SSDs capacity:
1 TB
Storage media:Used for the storage of date e.g. HDD (hard disk drive), SSD (solid-state drive).
SSD
Total storage capacity:The total amount of data that can be stored on the device.
1 TB

Sustainability
Sustainability certificates:
ENERGY STAR, EPEAT Climate +, EPEAT Gold

Weight & dimensions
Height:The measurement of the product from head to foot or from base to top.
15.9 mm
Depth:The distance from the front to the back of something.
199.1 mm
Width:The measurement or extent of something from side to side.
295.3 mm
Weight:Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
1.24 kg


Product details


R41PJ DELL

DELL XPS 13 9345 Qualcomm Snapdragon X1E-80-100 Laptop 34 cm (13.4") Full HD+ 32 GB LPDDR5x-SDRAM 1 TB SSD Wi-Fi 7 (802.11be) Windows 11 Pro Grey

£1564.99 and In stock

SKUR41PJ