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Head to head · Prices checked Oct 21, 2026

Jamesdonkey A3 3.0 vs Keydous NJ81

Get the Jamesdonkey A3 3.0 for knob and qmk. Get the Keydous NJ81 for the 4,000 mAh battery.

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 3.0

Keydous NJ81

  • Battery

    3,750 mAh

    4,000 mAh

  • Knob

    Yes

    No

  • Display

    None

    Yes

  • QMK

    Yes

    No

  • Sound dampening

    Yes

    No

KeebFinder scores

How we score
  • Jamesdonkey A3 3.0
  • Keydous NJ81
Performance
54
49
Build quality
60
55
Productivity
80
65
Customizability
82
79
Portability
76
80

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Mount style: Gasket Mount
  • Keycaps: PBT
See every spec side by side

Full specs

Jamesdonkey A3 3.0 vs Keydous NJ81 specs

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

9 of 22 specs differ

Jamesdonkey A3 3.0

Keydous NJ81

Typing & switches

Switch options

—
Clicky, Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
No

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
Yes

Media keys

Yes
No

Connectivity & battery

Connection

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

Battery

3,750 mAh
4,000 mAhBetter

USB-C

No
Yes

Build & materials

Case material

—
Plastic

Plate material

—
Brass, Steel

Keycaps

PBT
PBT

Weight

—
970 g

Dimensions

42 x 148 x 329 mm
36 x 134 x 315 mm

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2024
2022

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

Lowest price across stores, Amazon excluded.

  • MechkeysCN

    In stock
    $89Visit
  • AmazonGlobal

    Check price
    ~$89Visit
Keydous NJ812 stores
  • MechkeysCN

    In stock
    $99Visit
  • AmazonGlobal

    Check price
    ~$99Visit

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