Keychron K4 Ultra Wireless Custom Mechanical Keyboard, 8000 Hz Polling Rate

Product description

1 Up to 600 Hours

2 Keychron Launcher Web App

3 Keychron Apex Switch

Size 391.29 x 140.27 mm Front Height 23.83 mm (without keycaps) Back Height 30.87 mm (without keycaps) Weight 1241g ± 10g Body Material ABS Keycap OSA Double-Shot PBT Keycaps Stabilizer Screw-in PCB Stabilizer Backlight South-facing RGB LED Battery 4000 mAh Rechargeable Lithium Polymer Battery Compatible System macOS / Windows / Linux Connectivity 2.4 GHz / Bluetooth 5.2 / Type-C Wired Polling Rate 8000 Hz (Wired & 2.4GHz) / 125 Hz (Bluetooth) N-Key Rollover (NKRO) Yes (wireless & wired) Wireless Working Time Up to 600 hours (8K, backlit off) Hot-swappable Yes

Ultra-Fast 8000Hz Performance in Wireless Keyboard: Built for speed and productivity, the Keychron K4 Ultra 8K delivers an 8000 Hz polling rate in both 2.4 GHz wireless and wired modes with ultra-low 0.125ms latency. Its compact 96% layout keeps the number pad, function row, arrow keys, and navigation keys while saving desk space, making it ideal for work and gaming.
Tri-Mode Connectivity & Multi-OS Support: Connect the K4 Ultra mechanical keyboard via low-latency 2.4 GHz wireless, Bluetooth, or USB-C wired mode. Pair with up to 3 devices via Bluetooth 5.2 and switch easily between your computer, phone, and tablet. Fully supports macOS, Windows and Linux for flexible cross-platform productivity.
Hot-Swappable & Premium Feel: The K4 Ultra 8K wireless mechanical keyboard features a hot-swappable switch design and pre-lubed Keychron Apex switches, allowing you to easily replace any 3-pin and 5-pin MX mechanical switches in seconds and customize your typing experience without soldering. Double-shot PBT keycaps provide a durable, textured typing feel.
ZMK & Customization via the Keychron Launcher: Powered by open-source ZMK firmware, remap keys, create macros, adjust polling rate and tune RGB to suit your gaming or workflow needs via the Keychron Launcher Web App — no software download required. Please use the latest version of Chrome, Opera, or Edge browser to open the Launcher.
Long-Lasting Battery & South-Facing RGB: With the ZMK firmware, enjoy up to 600 hours of battery life with backlight off at an 8000 Hz polling rate, giving you long-lasting wireless performance. South-facing RGB backlighting adds customizable lighting effects for different setups and moods.

Product summary

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