$129
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| Specification | Details |
|---|---|
| Number of Keys | 87 (80%) |
| Switches | Mechanical |
| 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 |
| Connectivity and Power | Details |
|---|---|
| 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 |
| Physical Unit | Details |
|---|---|
| Dimension | 365.72 × 137.71 mm (14.40 × 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? |
1 Year
Manufacturers Warranty
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$129