Specs :
Supports 2.4 GHz dongle, Bluetooth, and a wired connection.
Support Mac & Windows
425 gram weight
1000 Hz polling rate
Battery life 8 months
Easy key remapping, macros, dynamic backlight effects

Number of Keys: 77 (75%)
Number of Multimedia Keys: 12
Frame Material: ABS
Keycap Material: ABS
Layout: ANSI
Polling Rate 1000 Hz (2.4 GHz & wired) / 90 Hz (Bluetooth)

CONNECTIVITY AND POWER
Battery: 800 mAh rechargeable li-polymer battery
Wireless Working Time: Up to 8 months
(Lab test result may vary by actual use)
Charging Time: Around 2.5 hours
Connection: 2.4 GHz / BT / Type-C Wired
Bluetooth version: 5.2
Bluetooth Device Name: Keychron B1 Pro
Compatible System: macOS / Windows / Linux

PHYSICAL UNIT
Dimension: 296 x 130 mm (11.65 x 5.11")
Weight: 425 g / 0.94 lbs
Height (front): 5.2 mm (0.2")
Height (rear): 14.5 mm (0.57")
Typing Angle: 3.2º
MCU: NRF52840-QIAA-R_AQFN73
Operating Environment: -10 to 50℃