Jamesdonkey RS2 3.0 vs Keychron K4 Ultra
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 3.0
Keychron K4 Ultra
Case material
Aluminum
ABS
Switch options
Linear
Clicky, Linear, Tactile
Mount style
Gasket Mount
Plate Mount
Display
Yes
None
Weight
1,140 g
1,241 g
- Jamesdonkey RS2 3.0
- Keychron K4 Ultra
- Performance
- 5088
- Build quality
- 7263
- Productivity
- 5787
- Customizability
- 5975
- Portability
- 5257
- Layout size: 96%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Battery: 4,000 mAh
- Keycaps: PBT
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Jamesdonkey RS2 3.0
No owner reviews collected yet.
Keychron K4 Ultra
2 owner reviews
“Quality keyboard. I just wish the indicator lights for caps lock and num lock was brighter. Even tried increasing it on the software but it isn't enough.”
Jamesdonkey RS2 3.0 vs Keychron K4 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
13 of 23 specs differ
Jamesdonkey RS2 3.0
Keychron K4 Ultra
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Lowest price across stores, Amazon excluded.
Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.
Not sold on either?
Still torn?
Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.