Description
Specifications
- Layout: 96%, ANSI
- Connectivity: 2.4 GHz, Bluetooth, wired; 8000 Hz polling rate
- Switches: Keychron Apex Switch Red / Brown / Banana; hot-swappable
- Build: ABS, Steel plate
- Keycaps: OSA Double-Shot PBT Keycaps
- Battery: 4000 mAh, up to 600 hours
- Software: Keychron Launcher remapping; works with macOS , Windows , Linux
- Backlight: South-facing RGB LED
- Weight: 1241g ± 10g
- Dimensions: 391.29 x 140.27 mm
- N-key rollover: Yes (wireless & wired)
Product details
Keychron K4 Ultra 8k is a wireless custom mechanical keyboard with a sleek, durable build. It supports 2.4 GHz, Bluetooth, and wired connections. Through the Keychron Launcher web app, users can remap keys and create macro commands on its 96% compact layout. Powered by ZMK firmware, it enables an 8K polling rate in wireless mode while delivering up to 600 hours of battery life. It is also fully compatible with Windows, macOS, and Linux.
KEYCHRON K4 ULTRA 8K
The K4 Ultra 8K is a wireless mechanical keyboard with a 96% layout. It delivers an ultra-responsive experience with an 8000 Hz polling rate in both wired and wireless modes. Supporting Bluetooth, wired, and ultra-low-latency 2.4 GHz connectivity, it adapts seamlessly to any setup. Powered by the open-source ZMK firmware, it unlocks endless customization possibilities while delivering up to 600 hours (8K, backlit off) of battery life for enhanced performance in both work and gaming.
Tri-Mode Connectivity
Up to 600 Hours of Wireless Endurance
With a 4000 mAh battery, optimized firmware, and an enhanced circuit design, the K4 Ultra 8K delivers up to 600 hours of use at an 8000 Hz polling rate with the backlight turned off, redefining what wireless performance can achieve.
An Epic Core Inside
Inside the K4 Ultra 8K lies a powerful MCU with 1 MB flash, delivering unmatched flexibility for deep customization and advanced functionality. It achieves an ultra-responsive 8K polling rate, ensuring every keystroke is registered with near-zero latency and exceptional accuracy for the most demanding gaming and professional tasks.
96% Compact Layout
The 96% compact layout keeps the full-size keyboard experience in a more space-efficient form. It retains the essential function row, arrow keys, and numeric keypad while reducing unnecessary gaps, giving you more room on your desk without sacrificing productivity. Whether you're handling spreadsheets, typing long documents, coding, or gaming, it delivers a practical balance of familiar control, efficient workflow, and everyday comfort in a streamlined footprint.
From Productivity to Play, Instantly
The K4 Ultra 8K transitions effortlessly between work and play. During the day, its 96% compact layout gives you a full-size typing experience with a numeric keypad while saving valuable desk space for coding, writing, spreadsheets, and focused tasks. When it’s time to unwind, the 8000 Hz polling rate and ultra-low-latency wireless connection provide the speed and precision needed for smooth gameplay. One keyboard, built for every part of your day.
Keychron Apex Switch
The K4 Ultra 8K comes with pre-lubed Keychron Apex Switches, crafted for gamers and typists who demand precision, durability, and a refined typing experience. The switch stem features a reinforced wall structure that enhances stability for smoother, wobble-free keystrokes and helps prevent dust and moisture from entering the switch housing for long-lasting performance.
Hot-swappable
Since everyone has unique typing preferences, the K4 Ultra 8K features a hot-swappable switch design, allowing you to easily swap switches in seconds and customize your experience—no soldering required.