Jamesdonkey RS2 4.0 vs Keychron J2
Get the Jamesdonkey RS2 4.0 for the 4,000 mAh battery and knob. Get the Keychron J2 for via.
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No reviews
from$99at Mechkeys
4.4 (22)4.4 · 22 reviews
from$59at Keychron
Which one should you get?
Get the
Jamesdonkey RS2 4.0
Battery
Build quality in the top 40% of 96% boards under $100.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
Get the
Keychron J2
VIA
Build quality in the top 40% of 75% boards under $100.
- No numpad.
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.
Jamesdonkey RS2 4.0
Keychron J2
Layout size
96%
75%
Battery
4,000 mAh
3,750 mAh
A larger battery means fewer cables during the day
Switch options
Linear
Clicky, Linear, Tactile
Knob
Yes
No
VIA
No
Yes
GUI remapping without compiling firmware
- Jamesdonkey RS2 4.0
- Keychron J2
- Performance
- 5870
- Build quality
- 7171
- Productivity
- 9373
- Customizability
- 8286
- Portability
- 5373
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- QMK
- Sound dampening
- Keycaps: PBT
Jamesdonkey RS2 4.0 vs Keychron J2 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
8 of 23 specs differ
Jamesdonkey RS2 4.0
Keychron J2
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
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
Mac & Windows
Released
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