Keychron J4 QMK Wireless Mechanical Keyboard
Keychron J4 QMK Wireless Mechanical Keyboard - Black - RGB Backlight / Red Switch (Hot-Swappable) is backordered and will ship as soon as it is back in stock.
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Keychron J4 is a wireless custom mechanical keyboard. It supports 2.4 GHz, Bluetooth, and a wired connection. It allows anyone to master any keys or macro commands on its 80% TKL layout through Keychron Launcher web app. Besides, users can hot-swap with Keychron Super mechanical switch in a breeze (hot-swappable version only).
No discount code can be used for the J4.
Please drop your email on "Notify Me When Available" if the product model is out of stock.
Keychron J4
The J4 is a wireless mechanical keyboard with a TKL (80%) layout. It supports 2.4 GHz, Bluetooth, and wired connections. Configurable through QMK and Keychron Launcher web app, it offers endless possibilities and enhanced productivity in your work and gaming!
The J4 upgraded the typing experience with multiple layers of acoustic foams, such as IXPE, PET, and EPDM, ensuring a superior sound and typing experience.
2.4 GHz & Bluetooth Connection
Experience peak gaming performance on the fly with the 2.4 GHz wireless connection boasting a rapid 1000 Hz polling rate. For seamless multitasking across your computer, phone, and tablet, you can effortlessly connect the J4 via Bluetooth 5.2 to three devices.
Program with QMK & Launcher.
The open-source QMK firmware means endless possibilities for key remapping, macros, shortcuts, and more. Now you can easily customize each key with the Keychron Launcher web app.
* Please use the latest version of Chrome / Opera / Edge browser to open the Launcher and connect the keyboard to your device via wired mode.
Significantly Enhanced Acoustic Foams
Elevate your typing with J4 featuring advanced IXPE acoustic foam for enhanced comfort, coupled with resilient EPDM foam for superior key switch support, responsiveness, and durability. The steel plate provide responsive feedback and a peaceful typing sound, while added weight will enhance the stability.
An Epic Core Inside
A powerful ARM architecture MCU equipped with 256KB Flash will provide more flexibility for developers. The polling rate is 1000 Hz on 2.4GHz and wired modes right out of the box, which makes the latency hardly noticeable even in competitive games.
Hot-Swappable (Optional)
We also provide a hot-swappable version for your choice, which means you can customize your typing experience without soldering, pop them in and it's done.
Every detail matters for a personalized typing experience, that’s why we give you the power. You can hot-swap every switch on the J4 with almost all of the 3pin and 5pin MX style mechanical switches on the market (including Cherry, Gateron, Kailh, Panda, etc.) without soldering. You can customize your own typing experience in seconds.
Keychron Super Switch
Our exclusive Keychron Super switch adopts a new mold with unparalleled precision. Every switch is tested for pro-grade quality and has a lifespan of up to 50 million clicks, providing great reliability and high performance for long typing sessions. Its new light affection structure on its transparent top housing also ensure high light transmittance and a more consistent, brighter backlight effect.
Double-shot PBT Keycaps
The double-shot PBT keycaps of the J4 provide excellent oil resistance and prevent the legends from fading out. Additionally, the keyboard offers two different keycap options to meet varying preferences and needs.
Cherry Profile Shine-Through Keycaps
MDA Profile Keycaps
North-facing RGB Backlights
The north-facing RGB is designed to better illuminate the keyboard backlight from the typist’s angle. The north-facing RGB is also free from interference when the user installs Cherry-profile alternative keycaps on their keyboard.
Comes with more than 22 types of RGB backlight settings. You can further fine-tune the RGB hue, saturation, brightness, effect speed with ease.
Ergonomic Support
Three levels of adjustable typing angle (3.4º, 7.7º & 10.7º) and curved OSA-profile keycaps are all working together to provide long-lasting ergonomic support for your wrist.
What's in the box?
What's in the box?
SPECIFICATION
Number of Keys: 87 (80%)
Switches: Mechanical
Switch Face: North-facing
Number of Multimedia Keys: 12
Frame Material: ABS
Keycap Material: Double-shot PBT
Keycap Profile: Cherry Profile / MDA Profile
Layout: ANSI
Polling Rate (2.4GHz and Wired Mode): 1000Hz
Polling Rate (BT Mode): 125Hz
N-Key Rollover (NKRO): Yes for both wireless and wired modes
CONNECTIVITY AND POWER
Backlit: 22 types of RGB backlight options plus endless possibilities
Battery: 3750 mAh rechargeable li-polymer battery
Wireless Working Time (Backlit off): Around 300 hours (Lab test result may vary by actual use)
Wireless Working Time (RGB): Around 90 hours (Lowest brightness)
Connection: 2.4 GHz / Bluetooth / Type-C wired
Bluetooth version: 5.2
Bluetooth Device Name: Keychron J4
Compatible System: Windows / Linux
PHYSICAL UNIT
Dimension: 365.72 x 137.71mm (14.40 x 5.42")
Weight: 870 g / 1.92 lbs
Height incl. keycap (front): 28.18 mm (1.11")
Height incl. keycap (rear): 37.81 mm (1.49")
Typing Angle: 4.5º and 9.6º
MCU: WB32F3G71RCT6 (256KB Flash)
Operating Environment: -10 to 50℃
Learn more about the Keychron J4, such as the shortcuts, Launcher web app tutorial, factory reset, and more.
