Keychron B1 Pro Ultra-Slim Wireless Keyboard (Space Grey) – Overview
Scissor-switch keys
Low-profile scissor mechanism with concave ABS keycaps
75%, 77 keys
ANSI layout with 12 multimedia keys
2.4 GHz, Bluetooth 5.2, USB-C
Three Bluetooth devices plus one via the 2.4 GHz dongle
Up to 8 months
800 mAh battery that recharges in about 2.5 hours
5.2 mm front height
14.5 mm at the rear with a 3.2° typing angle
425 g
ABS body with a 296 x 130 mm footprint
1000 Hz
On 2.4 GHz and wired, 90 Hz over Bluetooth
Keychron Launcher
Remap keys and set macros in the web app (ZMK firmware)
1 Year Carry-In
Keychron manufacturer warranty
Keychron B1 Pro Ultra-Slim Wireless Keyboard (Space Grey) Specifications
| General | |
|---|---|
| Brand | Keychron |
| Model | B1 Pro Ultra-Slim Wireless Keyboard |
| Part number | B1P-K1 |
| EAN | 4895248876267 |
| Colour | Space Grey |
| Compatibility | macOS, iOS, Windows, Android, Linux |
| Keys | |
| Layout | 75%, ANSI |
| Number of keys | 77 (including 12 multimedia keys) |
| Key mechanism | Scissor switch |
| Keycaps | ABS, concave |
| Backlight | None |
| N-key rollover | No |
| Programmable | Keychron Launcher web app (ZMK firmware) |
| Connectivity | |
| Wireless | 2.4 GHz and Bluetooth 5.2 |
| Wired | USB Type-C |
| Devices | Up to 3 Bluetooth devices plus 1 via the 2.4 GHz dongle |
| Polling rate | 1000 Hz (2.4 GHz and wired), 90 Hz (Bluetooth) |
| Power | |
| Battery | 800 mAh rechargeable Li-polymer |
| Battery life | Up to 8 months (Keychron lab figure) |
| Charging time | About 2.5 hours |
| Physical | |
| Body | ABS |
| Dimensions | 296 x 130 mm |
| Height | 5.2 mm front, 14.5 mm rear |
| Typing angle | 3.2° |
| Weight | 425 g |
| Operating temperature | -10 to 50 °C |
| In the Box and Warranty | |
| In the box | B1 Pro keyboard 2.4 GHz receiver |
| Warranty | 1 Year Keychron Carry-In |
About the Keychron B1 Pro Ultra-Slim Wireless Keyboard (Space Grey)
The Keychron B1 Pro is a compact 75% wireless keyboard with low-profile scissor keys, built for people who work across a laptop, tablet and phone and want something thin enough to carry daily. This B1P-K1 version comes in space grey, a darker finish that hides wear and matches grey laptops. It pairs with up to three Bluetooth 5.2 devices plus a 2.4 GHz dongle, or runs wired over USB-C, with 1000 Hz polling on the dongle and cable. The 425 g ABS body and 800 mAh battery give up to eight months of use between charges.



