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 J5
Layout size
96%
100%
Battery
4,000 mAh
3,750 mAh
Switch options
Linear
Clicky, Linear, Tactile
Knob
Yes
No
VIA
No
Yes
- Jamesdonkey RS2 4.0
- Keychron J5
- Performance
- 5870
- Build quality
- 7169
- Productivity
- 9362
- Customizability
- 8286
- Portability
- 5348
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- QMK
- Keycaps: PBT
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Jamesdonkey RS2 4.0
No owner reviews collected yet.
Keychron J5
3 owner reviews
“Totally enjoying this keyboard. Weight gives a quality feel. Love north facing RGB and effects. Price is in a sweet spot. Happy that I didn’t allow lack of reviews to affect my decision. Highly recommended.”
“Originally had purchased (2) J5 keyboards for staff in the office in January. Upon delivery, the top number row of one of the keyboards did not work and had to be RMA'd, within a few weeks the second keyboard refused to work altogether. Received a replacement…”
Jamesdonkey RS2 4.0 vs Keychron J5 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
10 of 24 specs differ
Jamesdonkey RS2 4.0
Keychron J5
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
Backlight
QMK
VIA
Mac & Windows
Released
Compare prices
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