Keychron K3 V3 K3X-B1 QMK Wireless Mechanical Keyboard Red Switch RGB 75% US
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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.
For any questions about this item, availability, or delivery times, please contact us at 22 270068
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) |
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