Keychron J4
KeychronReleased 2025
J4
77/100
80% ANSI1,000 Hz pollingHot-swappableHall-effectQMK / VIARGB backlight
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Why we rate it
- Class-leading customisability (86/100)
- Strong productivity (74/100)
- Hot-swappable switches
- First-class QMK / VIA firmware
- Few standout weaknesses for the class
Score profile
Six weighted axes · the shape tells the storyWhere the J4 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 typesLinear · Tactile · Clicky
Hot-swappableYes
Screw-in stabilisersYes
Sound dampeningYes
Hall-effect / magneticYes
Rapid triggerYes
Connectivity & firmware
ConnectionWireless + wired
USB-CYes
Polling rate1,000 Hz
Battery1 mAh
N-key rolloverYes
QMKYes
VIAYes
VIALYes
Mac & WindowsYes
Multi-media keysYes
Build
Keycap materialPBT
BacklightRGB · North-Face
ColourwaysYes
More specs
Passthrough UsbYes
Head to head
Highlighted cell = better in that rowJ4 vs Mistel BAROCCO MD770
J4BAROCCO MD770
| KeychronJ4This page | MistelBAROCCO MD770 | |
|---|---|---|
| Overall score | 77 /100Better | 76 /100 |
| Build quality | 71 /100 | 87 /100Better |
| Performance | 70 /100Better | 58 /100 |
| Connection | Wireless + wiredBetter | Wired only |
| Polling rate | 1,000 Hz | 1,000 Hz |
| Mount type | — | Plate MountBetter |
| Case material | — | ABS · PlasticBetter |
| Hot-swappable | Yes | Yes |
| QMK / VIA | Yes | Yes |
