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SPECIFICATIONS:
Number of Keys
87 (80%)
Switches
Mechanical - Brown
Switch Face
North-facing
Number of Multimedia Keys
12
Frame Material
ABS
Keycap Material
Double-shot PBT
Keycap Profile
Cherry Profile / MDA Profile
Layout
ANSI
Polling Rate (2.4GHz and Wired Mode)
1000Hz
Polling Rate (BT Mode)
125Hz
N-Key Rollover (NKRO)
Yes for both wireless and wired modes
Backlit
22 types of RGB backlight options plus endless possibilities
Battery
3750 mAh rechargeable li-polymer battery
Wireless Working Time (Backlit off)
Around 288 hours (Lab test result may vary by actual use)
Wireless Working Time (RGB)
Around 156 hours
Connection
2.4 GHz / Bluetooth / Type-C wired
Bluetooth version
5.2
Bluetooth Device Name
Keychron J4
Compatible System
Windows / Linux / macOS
Dimension
365.72 x 137.71mm (14.40 x 5.42")
Weight
870 g / 1.92 lbs
Height incl. keycap (front)
28.18 mm (1.11")
Height incl. keycap (rear)
37.81 mm (1.49")
Typing Angle
4.5º and 9.6º
MCU
WB32F3G71RCT6 (256KB Flash)
Operating Environment
-10 to 50℃
