Keychron J4 QMK
KeychronReleased 2025
J4 QMK
72/100
80% ANSI1,000 Hz pollingHot-swappableHall-effectQMK / VIARGB backlight
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Why we rate it
- Class-leading productivity (84/100)
- Class-leading performance (79/100)
- Hot-swappable switches
- First-class QMK / VIA firmware
- Build quality is the weak point (61/100)
- ABS case rather than metal
Score profile
Six weighted axes · the shape tells the storyWhere the J4 QMK wins and loses
Full specification
Grouped · supported features marked in blueSpecifications
Layout
Layout size80
StandardANSI
ProfileNormal
ErgonomicsNormal
Volume knobYes
OLED / LCD screenYes
Switches & feel
Switch typesTactile · Linear
Hot-swappableYes
Screw-in stabilisersYes
Sound dampeningYes
Hall-effect / magneticYes
Rapid triggerYes
Connectivity & firmware
ConnectionWireless + wired
USB-CYes
Polling rate1,000 Hz
Battery3750 mAh
N-key rolloverYes
QMKYes
VIAYes
VIALYes
Mac & WindowsYes
Multi-media keysYes
Build
Case materialABS
Keycap materialPBT
BacklightRGB · White · North-Face
ColourwaysYes
Dimensions38
Weight870 g
More specs
Height Mm38 mm
Passthrough UsbYes
Head to head
Highlighted cell = better in that rowJ4 QMK vs Wooting 80HE
J4 QMK80HE
| KeychronJ4 QMKThis page | Wooting80HE | |
|---|---|---|
| Overall score | 72 /100 | 73 /100Better |
| Build quality | 61 /100 | 68 /100Better |
| Performance | 79 /100 | 94 /100Better |
| Connection | Wireless + wiredBetter | Wired only |
| Polling rate | 1,000 Hz | 8,000 HzBetter |
| Mount type | — | Plate MountBetter |
| Case material | ABS | ABS · Plastic |
| Hot-swappable | Yes | Yes |
| QMK / VIA | Yes | Yes |
