Jamesdonkey RS2 4.0 vs Keychron K5 Ultra
Get the Jamesdonkey RS2 4.0 for the 4,000 mAh battery.
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No reviews
from$99at Mechkeys
5.0 · 4 reviews
from$114at Keychron
Which one should you get?
Get the
Jamesdonkey RS2 4.0
Battery
Build quality in the top 35% of 96% boards under $100.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
- Compact full-size layout. The numpad is present, the gaps of a full-size board are not.
Get the
Keychron K5 Ultra
Build quality in the top 15% of 100% boards under $150.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- 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.
Jamesdonkey RS2 4.0
Keychron K5 Ultra
Layout size
96%
100%
Battery
4,000 mAh
2,600 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Case material
Aluminum
ABS, Metal, Wood
Switch options
Linear
Clicky, Linear, Tactile
- Jamesdonkey RS2 4.0
- Keychron K5 Ultra
- Performance
- 5891
- Build quality
- 7175
- Productivity
- 9393
- Customizability
- 8289
- Portability
- 5356
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Knob
- QMK
- Sound dampening
- Keycaps: PBT
Jamesdonkey RS2 4.0 vs Keychron K5 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
12 of 26 specs differ
Jamesdonkey RS2 4.0
Keychron K5 Ultra
Switch options
Hot-swappable
Mount style
Low profile
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
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Jamesdonkey RS2 4.0
No ISO layout at the stores we track.
Keychron K5 Ultra
Keychron (DE)
ISO-DE, ISO-FR, ISO-ES, ISO-IT
In stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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.
Lowest price across stores, Amazon excluded.
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