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Head to head · Prices checked Oct 25, 2026

Jamesdonkey RS2 4.0 vs WOBKEY Rainy75

Get the Jamesdonkey RS2 4.0 for the 4,000 mAh battery and knob.

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What actually differs

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

WOBKEY Rainy75

  • Layout size

    96%

    75%

  • Battery

    4,000 mAh

    3,500 mAh

    A larger battery means fewer cables during the day

  • Mount style

    Gasket Mount

    Gasket Mount, PCB Mount, Plate Mount

  • Knob

    Yes

    No

  • Weight

    1,150 g

    1,800 g

    Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score
  • Jamesdonkey RS2 4.0
  • WOBKEY Rainy75
Performance
58
70
Build quality
71
90
Productivity
93
94
Customizability
82
94
Portability
53
81

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Case material: Aluminum
  • Switch options: Linear
  • QMK
  • Sound dampening
See every spec side by side

Full specs

Jamesdonkey RS2 4.0 vs WOBKEY Rainy75 specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

11 of 24 specs differ

Jamesdonkey RS2 4.0

WOBKEY Rainy75

Typing & switches

Switch options

Linear
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount, PCB Mount, Plate Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

96%
75%

Layout standard

ANSI
ANSI, ISO, ISO-DE

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired

Battery

4,000 mAhBetter
3,500 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum

Plate material

—
FR4, Plastic, Polycarbonate

Keycaps

PBT
PBT

Weight

1,150 g
1,800 g

Dimensions

34 x 405 x 138 mm
40 x 320 x 130 mm

Backlight

RGB
RGB, south-facing

Firmware & software

QMK

Yes
Yes

VIA

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2024

Where to buy

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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