Keychron J2

The Keychron J4 gives you the flexibility to connect via wired USB-C, fast 2.4 GHz wireless (ideal for gaming), and Bluetooth 5.2 for seamless switching among multiple devices. This makes it perfect for both desktop setups and mobile multitasking.

Absolutely! The J4 supports full key remapping, macros, and RGB lighting customization through the open-source QMK firmware or the intuitive Keychron Launcher web app. You can adjust everything from per-key RGB colors to complex shortcuts, making your keyboard truly personal.

The J4 is designed for broad compatibility and works smoothly with Windows and Linux systems. Its plug-and-play functionality means you can get started right away, and advanced features like NKRO work across both platforms.

The J4 is packed with multiple layers of acoustic foams, including IXPE and EPDM, which help dampen noise and enhance the overall typing feel. Its steel plate adds stability and responsive feedback for each keystroke, so you get a satisfying yet quiet typing session.

Yes! The hot-swappable version of the J4 lets you easily change out mechanical switches without any soldering. It supports most 3-pin and 5-pin MX-style switches, so you can experiment with different switch types to find your perfect feel.

The J4 features premium double-shot PBT keycaps, which are known for their durability, oil resistance, and crisp legends that won't fade over time. You can choose between Cherry and MDA profiles for your preferred typing angle and comfort.

Yes! The J4 is built with gamers in mind, supporting N-Key Rollover (NKRO) in both wired and wireless modes. In addition, it offers a blazing-fast 1000 Hz polling rate in wired and 2.4 GHz wireless modes, ensuring near-instant response times.

With its 3750 mAh battery, the J4 can run up to around 300 hours with the backlight off, or about 90 hours even with RGB lighting at the lowest brightness. This means you can go days or even weeks between charges, depending on your usage.

Keychron’s Super Switch is engineered for precision and reliability, boasting up to 50 million keystrokes. Its transparent top housing ensures brilliant, consistent backlighting, making your RGB effects pop while delivering a smooth and satisfying typing experience.

Definitely! The J4’s north-facing RGB backlights are designed to shine brightly from the typist's perspective and are compatible with Cherry-profile keycaps. You can choose from over 22 preset effects or fine-tune the lighting to your liking.

The J4 is thoughtfully designed with two adjustable typing angles (4.5º and 9.6º) and comes with curved keycap profiles to support your wrists and reduce fatigue, even during extended work or gaming sessions.

To use the Keychron Launcher, simply connect your J4 to your computer via the wired USB-C connection and open the Launcher in a supported browser (latest Chrome, Opera, or Edge). You’ll be able to remap keys, set macros, and adjust lighting with just a few clicks.