Keychron B31 Wireless Keyboard - Deep Black

The B31 is a wireless keyboard with a 75% layout, built for both versatility and comfort. Its silent typing and scissor mechanism deliver a smooth, quiet experience, while tri-mode connectivity—via 2.4 GHz, Bluetooth 5.2, and wired—ensures seamless use across multiple devices, whether you're at home, in the office, or on the go.

Scissor Mechanism:
The B31 scissor switch is equipped with a more innovative design than the traditional scissor mechanism. It is 59% taller than the standard ones, leading to a more accurate, stable and even quieter keystroke.

Silent Typing:
This keyboard features fully pre-lubed keys, ensuring exceptionally smooth keystrokes with minimal friction and a consistent feel across every key. It delivers an ultra-quiet typing experience that’s ideal for shared spaces, office work, or late-night gaming.

Program B31 with Keychron Launcher:
Unlock limitless customization with Keychron Launcher web app, enabling easy key remapping, macros, shortcuts, and more.

Wireless and Wired:
Enjoy excellent performance with the B31's 2.4 GHz wireless connection, featuring a swift 1000 Hz polling rate for a cable-free and tidy setup. Effortlessly switch between devices using Bluetooth 5.2, enabling smooth multitasking. Wired (USB-C) – for a stable, plug-and-play connection and charging at the same time.

Plug-and-Play Receiver:
For a better 2.4 GHz wireless experience, the B31 comes with a Type-A receiver. Enjoy the quick plug-and-play time. Or, put it away in the keyboard magnetic storage slot at the top right corner.

Suitable For All Devices:
The B31 has a system toggle to switch between Windows and macOS systems. And you can even configure different keymaps for both devices. Our Keychron Launcher web app is compatible with macOS, Windows, and Linux.

Continuous Usage:
Our B31 keyboard is equipped with an 800mAh rechargeable battery, providing impressive long-lasting performance. With intelligent power management and efficient wireless connectivity, it can deliver up to 320 hours of continuous use on a single charge. This ensures you enjoy extended battery life without frequent charging—perfect for a truly wireless, uninterrupted experience.

Convenient Shortcut Keys:
The B31 is designed with user-friendly shortcut functionality, allowing you to easily switch between multimedia controls (like volume, play/pause, and brightness) and standard function keys (F1–F12). By pressing Fn + X + L for three seconds, you can seamlessly toggle between these two modes.

Ergonomic Support:
The easily adjustable angles (6.5º/ 9º) bring out the best typing experience to provide long-lasting ergonomic support for your wrist. The slightly taller keycaps helps prevent wobbling and reducing fatigue even during long typing sessions.

• Width: 138.33 mm
• Length: 327.06 mm
• Front Height: 17.94 mm (inclu. keycaps)
• Back Height: 25.92 mm (inclu. keycaps)
• Polling Rate: 1000 Hz (2.4 GHz & Wired)/125 Hz (Bluetooth)
• Angle: 5° / 6.5° / 9°
• Weight: 520 ± 10 g
• Body Material: ABS Plastic
• Keycap Material: ABS (Keycaps are not replaceable.)
• NKRO Support: No
• Number of Keys: 82 (75%)
• MCU: Telink TLSR8258
• Bluetooth Version: 5.2
• Battery: 800 mAh rechargeable li-polymer
• Connectivity: 2.4GHz / Bluetooth / Type-C Wired
• Backlight: Non-Backlit
• Cable: Type-C cable + Type-A to Type-C adapter
• Operating Environment: -10℃ to 50℃
• Wireless Working Time: Up to 320 hours (Lab test result may vary by actual use)
• Hot-swappable: No

• 1x Keychron B31 Wireless Keyboard
• 1x Type-A to Type-C Cable
• 1x Type-A 2.4GHz Receiver