Keychron K3 Ultra 8K 75% Wireless Mechanical Keyboard, Black, Milk POM Red Switches, 8000 Hz, Bluetooth 5.2, USB-C, RGB, Hot-Swappable

Expert Features

  • Ultra-Slim 75% Layout: A compact 75% keyboard with a low-profile design for a tidy desk and comfortable everyday use.
  • 8000 Hz Polling: Get 8000 Hz polling over 2.4 GHz wireless and wired connections; Bluetooth polling is 125 Hz.
  • Three Connection Modes: Connect through 2.4 GHz, Bluetooth 5.2, or USB-C wired mode.
  • Keychron Milk POM Red Switches: K3U-H1 is the fully assembled black version with low-profile linear Red switches.
  • Hot-Swappable Switches: Swap compatible Keychron Milk POM switches without soldering.
  • Connect Up to Three Bluetooth Devices: Pair the keyboard with up to three devices and switch between them.
  • ZMK and Keychron Launcher: Customize keymaps, macros, shortcuts, backlighting, and firmware through the Launcher web app.
  • Up to 550 Hours of Battery Life: Keychron’s listed runtime is up to 550 hours with backlight off; actual usage varies.
  • Low-Profile LSA Keycaps: Double-shot PBT keycaps use Keychron’s low-profile LSA shape and are non-shine-through.
  • RGB Customization: Choose from 22+ RGB settings, including static white, and personalize per-key or mixed-zone lighting.
  • Natural Wood and Metal Frame: Combines natural wood accents with an aluminum frame for a slim, refined build.
  • Multi-OS Compatibility: Compatible with Windows, macOS, and Linux; includes Mac and Windows keycaps.

Expert Specs

Specification Details
Brand Keychron
Model K3 Ultra 8K Wireless Custom Mechanical Keyboard
SKU K3U-H1
Variant Fully Assembled, Black, Keychron Milk POM Red
Layout 75% compact
Switch type Low-profile Keychron Milk POM Red mechanical switches
Hot-swappable Yes; Keychron Milk POM switches
Keycaps Low-profile LSA double-shot PBT; non-shine-through
Body material Aluminum + wood
Bottom case material ABS plastic
Plate material Anodized aluminum alloy
Stabilizer Plate-mounted
Backlight North-facing RGB LED; 22+ settings, including static white
Connectivity 2.4 GHz, Bluetooth 5.2, Type-C wired
Polling rate 8000 Hz wired and 2.4 GHz; 125 Hz Bluetooth
N-Key Rollover (NKRO) Yes, wireless and wired
Bluetooth device capacity Up to 3 devices
Bluetooth device name Keychron K3 Ultra 8K
Battery 2600 mAh rechargeable lithium-polymer
Listed wireless working time Up to 550 hours with backlight off at 8K; actual use varies
Compatible systems macOS, Windows, Linux
Dimensions 320.62 × 126.00 mm
Front height 16.55 mm without keycaps
Back height 20.1 mm without keycaps
Feet height 2 mm
Weight 566 g ± 10 g
Operating environment -10°C to 50°C

Features & Compatibility

K3U-H1
KEYCHRON K3 ULTRA 8K WIRELESS MECHANICAL KEYBOARD/HOT SWAP/RGB/RED SWITCH-BLK NEW