Keychron K3 V3 K3X-B1 QMK Wireless Mechanical Keyboard Red Switch RGB 75% US (Boxed)
Keychron K3 V3 (K3X-B1) is a low-profile 75% wireless mechanical keyboard with QMK firmware, Bluetooth 5.2, Red switches, RGB lighting. Features enhanced acoustic foams, web-based Launcher app, Mac/Windows layout support, up to 124hr battery.
Please Note
The website is currently being actively developed, you are welcome to place the order and in 99% of the cases your order will be processed as usual, but in some cases there may be a delay or the price may change. We will notify you if there are any issues.
Discontinued
This item was discontinued and currently is not available for order on our website. The item may become available soon. Please contact us if you need more information regarding the upcoming arrivals.
| Keyboards - Device Type | Ergonomic Keyboard Gaming Keyboard Office Keyboard |
|---|---|
| Keyboards - Special Features | Hot Swappable Low Profile Programmable 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) |
| Keyboards - Backlighting | Per-Key RGB |
The Keychron K3 Version 3 (K3X-B1) is an ultra-slim wireless mechanical keyboard featuring a compact 75% layout (84 keys) with QMK firmware for unlimited customization via the web-based Keychron Launcher app. Equipped with low-profile Keychron 2.0 Red linear mechanical switches, enhanced IXPE/EPDM/latex acoustic foams for quieter typing, and per-key RGB backlighting with 22+ effects. Supports Bluetooth 5.2 connectivity to 3 devices and wired USB-C mode with 1000Hz polling.
Hot-swappable (RGB version), compatible with Mac/Windows/Linux layouts (extra keycaps included), LSA shine-through ABS keycaps, adjustable typing angles (2.5°/4.2°/6.5°), and 1550mAh battery offering up to 124 hours (backlight off). Ideal for office, gaming, and portable use with aluminum frame and improved stabilizers.
- ✅ Bluetooth 5.2 + Wired USB-C connectivity
- ✅ QMK/VIA programmable via web app (no install needed)
- ✅ Low-profile Red mechanical switches (pre-lubed)
- ✅ RGB per-key backlighting + shine-through keycaps
- ✅ 1550mAh battery: 124hrs (off), 82hrs (RGB low)
- ✅ Hot-swappable, multi-OS keycaps included
- ✅ Enhanced acoustic foams for premium sound
| Layout | 75% (84 keys) |
| Switches | Keychron Low-Profile Mechanical Red (Linear) |
| Switch Type | Low-Profile Mechanical |
| Keycaps | LSA Shine-through ABS |
| Backlighting | Per-key RGB (22+ modes) |
| Connectivity | Bluetooth 5.2 (3 devices), USB-C wired |
| Battery | 1550 mAh Li-Po (124hrs backlight off, 82hrs RGB low) |
| Polling Rate | 1000Hz wired / 90Hz wireless |
| Hot-swappable | Yes (low-profile mechanical switches) |
| Firmware | QMK open-source (Keychron Launcher web app) |
| Dimensions (keyboard) | 306 x 116 x 22 mm |
| Weight (keyboard) | 396 g |
| Typing Angle | 2.5° / 4.2° / 6.5° adjustable |
| N-Key Rollover | Yes (wired & wireless) |
| Compatibility | Windows / macOS / Linux |
| MCU | ARM Cortex-M3 32-bit (256KB Flash) |