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Head to head · Prices checked Nov 7, 2026

Jamesdonkey A3 vs MelGeek O2

Get the Jamesdonkey A3 for hot-swappable and the 3,000 mAh battery.

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Quick verdict

Which one should you get?

Get the

Jamesdonkey A3

Hot-swappable

Build quality in the top 50% of 75% boards under $100.

Rules this board out

  • No numpad.
$89 at Mechkeys

Get the

MelGeek O2

Build quality in the top 50% of Numpad boards under $150.

Rules this board out

  • Switches are soldered. Swapping them means soldering.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • Numpad only. This is not a full keyboard.
$129 at MelGeek

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 A3

MelGeek O2

  • Layout size

    75%

    Numpad

  • Hot-swappable

    Yes

    No

    Switch changes without soldering

  • Battery

    3,000 mAh

    2,500 mAh

    A larger battery means fewer cables during the day

  • Case material

    ABS, PBT, Plastic, Polycarbonate

    ABS, Aluminum, Polycarbonate

  • Knob

    Yes

    No

KeebFinder scores

How we score
  • Jamesdonkey A3
  • MelGeek O2
Performance
61
54
Build quality
66
65
Productivity
91
54
Customizability
85
50
Portability
79
83

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Mount style: Gasket Mount
  • Sound dampening
  • Plate material: Polycarbonate
  • Keycaps: PBT
See every spec side by side

Full specs

Jamesdonkey A3 vs MelGeek O2 specs

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

13 of 25 specs differ

Jamesdonkey A3

MelGeek O2

Typing & switches

Switch options

Clicky, Linear, Tactile
—

Hot-swappable

Yes
No

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

75%
Numpad

Layout standard

ANSI
ANSI

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

Max polling rate

—
1,000 Hz

Battery

3,000 mAhBetter
2,500 mAh

USB-C

Yes
No

Build & materials

Case material

ABS, PBT, Plastic, Polycarbonate
ABS, Aluminum, Polycarbonate

Plate material

Polycarbonate
Polycarbonate

Keycaps

PBT
PBT

Weight

1,000 g
650 g

Dimensions

40 x 136 x 321 mm
135 x 326 x 27 mm

Typing angle

—
4°

Backlight

RGB
RGB, north-facing

Firmware & software

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2022
2025

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.

Jamesdonkey A33 stores
MelGeek O22 stores

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