Keychron

Keychron K3 Max K3M-H1 Red Switch 75% Low-Profile Wireless Mechanical Keyboard (Boxed)

SKU 40193 Brand Keychron EAN13 4895248862710
Keychron K3 Max is an ultra-slim 75% wireless mechanical keyboard with hot-swappable low-profile Gateron Red switches. Supports 2.4GHz (1000Hz), Bluetooth 5.1 (3 devices), wired USB. QMK/VIA programmable, RGB backlit, acoustic foam.
Keyboards - Device Type Gaming Keyboard Office Keyboard
Keyboards - Special Features Hot Swappable Low Profile Programmable Keys Silent Keys
Keyboards - Form Factor Compact (60% / 65% / 75%)
Keyboards - Key Layout US
Keyboards - Switch Type Low-Profile Mechanical Mechanical - Linear
Keyboards - Connection Bluetooth Wired (USB) Wireless RF (USB Dongle)
Keyboards - Backlighting Per-Key RGB

The Keychron K3 Max (K3M-H1) is an ultra-slim wireless custom mechanical keyboard featuring a compact 75% ANSI US layout. Equipped with hot-swappable low-profile Gateron Red linear switches (MX 2.0), it delivers smooth, reliable keystrokes. Connect via 2.4GHz dongle (1000Hz polling), Bluetooth 5.1 to 3 devices, or wired USB. Powered by QMK/VIA firmware for endless key remapping and macros via the web-based Keychron Launcher.

Ultra-thin aluminum frame with innovative 31% slimmer low-profile switches, north-facing RGB lighting (22 modes), double-shot PBT LSA profile keycaps compatible with Mac/Windows. Includes IXPE acoustic foam and latex switch pads for silent, comfortable typing. Battery lasts up to 78 hours without backlight (550mAh). Features redesigned stabilizers, 3-level adjustable typing angle, and OS switch.

  • Hot-swappable Gateron low-profile mechanical switches (Red linear)
  • 2.4GHz 1000Hz / Bluetooth 5.1 / Wired connectivity
  • QMK/VIA programmable with ARM MCU (256KB Flash)
  • North-facing per-key RGB + acoustic foam
  • Box includes: keyboard, USB-C cable, 2.4G receiver+adapter, switch/keycap pullers
Layout75% ANSI US (84 keys + 12 multimedia)
SwitchesGateron Low-Profile Red (Linear, hot-swappable)
Connectivity2.4GHz (1000Hz), Bluetooth 5.1 (3 devices, 90Hz), Wired USB
Polling Rate1000Hz (2.4GHz/Wired), 90Hz (BT)
BacklightingNorth-facing RGB (22 modes)
KeycapsDouble-shot PBT LSA profile (Mac/Windows)
FrameABS + Aluminum
Battery550mAh (78h no backlight, 40h low backlight)
FirmwareQMK/VIA (ARM MCU, 256KB Flash)
Dimensions (Keyboard)30.6 x 1.7 x 11.6 cm (12.05 x 0.67 x 4.57 in)
Acoustic FeaturesIXPE foam + Latex switch pads
CompatibilityWindows, macOS