Keychron J4 QMK RGB Wireless Mechanical Keyboard Banana Switch Black

The Keychron J4 QMK RGB Wireless Mechanical Banana Switch Black Keyboard features an 80 percent TKL layout, Keychron Super Banana mechanical switches and double shot PBT keycaps to provide a responsive typing experience, with QMK firmware and Keychron Launcher supporting custom key remapping and macros. Tri-mode connectivity via 2.4GHz wireless, Bluetooth 5.2 and wired connections provides flexible device compatibility, while a 1000Hz polling rate, layered acoustic foams and customisable RGB backlighting enhance gaming and everyday use.

Features

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Keychron J4 QMK Wireless Mechanical Keyboard

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).

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 features a superior sound and typing experience with multiple layers of acoustic foams, such as IXPE, PET, and EPDM.

• Launcher Web Configurator
• Enhanced Acoustic Foams
• Connects up to 3 Devices
• Support All Systems
• 1000 Hz Polling Rate
• Hot-Swappable Option
• 2.4 GHz & Bluetooth
• Double-Shot PBT Keycaps

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.

Programme with QMK & Launcher

The open-source QMK firmware means endless possibilities for key remapping, macros, shortcuts, and more. Now you can easily customise 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)

Keychron also provide a hot-swappable version for your choice, which means you can customise your typing experience without soldering, pop them in and it's done.

Every detail matters for a personalised typing experience, that’s why Keychron gives 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 customise your own typing experience in seconds.

Keychron Super Switch

Keychron's exclusive Keychron Super switch adopts a new mould 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)

MDA Profile (Non-Shine-Through)

Unlock Dynamic Backlit Control

Comes with more than 22 types of RGB backlight settings (as well as a static white backlight option), and 14 types of backlight settings on the White Backlight version. You can further fine-tune the RGB hue, saturation, brightness, effect speed with ease.

Ergonomic Support

Two levels of adjustable typing angle (4.5º & 9.6º) and curved Cherry profile and MDA profile keycaps are all working together to provide long-lasting ergonomic support for your wrist.