Keychron K3 Ultra 8K Black Wireless Mechanical Keyboard, 75% Compact Layout, Milk POM Banana Switches, Hot-Swappable, RGB, 2.4 GHz, Bluetooth 5.2, USB-C, Up to 550-Hour Battery

EXPERT FEATURES

• 8K Polling : Delivers an 8000 Hz polling rate in wired and 2.4 GHz modes for fast, responsive input. Bluetooth polling is 125 Hz.
• Three Connection Modes : Connect through 2.4 GHz wireless, Bluetooth 5.2, or USB-C wired.
• Compact 75% Layout : Saves desk space while keeping a practical keyboard layout for gaming and everyday use.
• Keychron Milk POM Banana Switches : Pre-lubed, tactile low-profile mechanical switches made with POM and POK materials. Switches are hot-swappable without soldering.
• Up to 550 Hours of Battery Life : The 2600 mAh rechargeable battery provides up to 550 hours of wireless use with the backlight off.
• ZMK and Keychron Launcher Customization : Remap keys, set macros and shortcuts, and customize the keyboard through the Keychron Launcher web app.
• Low-Profile Double-Shot PBT Keycaps : Durable keycaps with oil-resistant surfaces and legends designed not to fade; non-shine-through.
• Compatible Across Systems : Works with Windows, macOS, and Linux.
• N-Key Rollover : Supports simultaneous key presses in both wired and wireless modes.

  

  

  

  

  

  

  

  EXPERT SPECS

  Specification	Details
  Product name	Keychron K3 Ultra 8K Wireless Custom Mechanical Keyboard
  Model	K3U-H4
  Assembly	Fully assembled
  Color	Black
  Switch	Keychron Milk POM Banana; tactile; low-profile; pre-lubed; hot-swappable
  Layout	75% compact
  Connectivity	2.4 GHz wireless, Bluetooth 5.2, USB-C wired
  Polling rate	8000 Hz in wired and 2.4 GHz modes; 125 Hz in Bluetooth mode
  Battery	2600 mAh rechargeable lithium-polymer
  Wireless battery life	Up to 550 hours with backlight off
  Firmware	Open-source ZMK
  Customization	Key remapping, macros, shortcuts, and firmware through the Keychron Launcher web app
  Keycaps	Low-profile LSA double-shot PBT; non-shine-through; oil-resistant
  Hot-swappable	Yes; no soldering required
  N-key rollover	Yes, wired and wireless
  Compatible systems	Windows, macOS, Linux
  Body material	Aluminum and wood
  Bottom case material	ABS plastic
  Plate material	Anodized aluminum alloy
  Stabilizer	Plate-mounted
  Backlight	North-facing RGB LED
  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 to 50 °C