Ajazz AK870 vs Keychron J4
Get the Ajazz AK870 for knob. Get the Keychron J4 for qmk.
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4.8 (5)4.8 · 5 reviews
from$83at Mechkeys
No reviews
from$59at Keychron
Which one should you get?
Get the
Ajazz AK870
Knob
Build quality in the bottom 35% of 80% boards under $100.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Get the
Keychron J4
QMK
Build quality in the top 30% of 80% boards under $100.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Ajazz AK870
Keychron J4
Switch options
Linear
Clicky, Linear, Tactile
Knob
Yes
No
Display
TFT
None
A case display rather than a typing feature
Weight
970 g
870 g
Heavier boards stay planted and lighter ones travel
QMK
No
Yes
The deep option when you want to remap every key
- Ajazz AK870
- Keychron J4
- Performance
- 5082
- Build quality
- 5471
- Productivity
- 8389
- Customizability
- 7389
- Portability
- 7373
- Layout size: 80%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Battery: 4,000 mAh
- Case material: ABS
- Sound dampening
Ajazz AK870 vs Keychron J4 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 26 specs differ
Ajazz AK870
Keychron J4
Switch options
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
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