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Head to head · Prices checked Oct 21, 2026

Jamesdonkey A3 vs Keychron J3 SE

Get the Jamesdonkey A3 for knob. Get the Keychron J3 SE 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

Keychron J3 SE

  • Layout size

    75%

    96%

  • Battery

    3,000 mAh

    4,000 mAh

  • Case material

    ABS, PBT, Plastic, Polycarbonate

    ABS

  • Knob

    Yes

    No

  • Weight

    1,000 g

    1,145 g

KeebFinder scores

How we score
  • Jamesdonkey A3
  • Keychron J3 SE
Performance
62
80
Build quality
66
68
Productivity
91
89
Customizability
85
86
Portability
79
57

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Switch options: Clicky, Linear, Tactile
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Jamesdonkey A3

No owner reviews collected yet.

Keychron J3 SE

5.0

1 owner reviews

Praise
“I love the keyboard! Everything was as expected but the keys are even smoother than I could have hoped for. I love the color, it matches exactly what was displayed on the website. Setup was very easy once I actually read the manual. I like that it gives you…”
Nathalia N.· via Keychron

Full specs

Jamesdonkey A3 vs Keychron J3 SE specs

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

12 of 26 specs differ

Jamesdonkey A3

Keychron J3 SE

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

75%
96%

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 mAh
4,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS, PBT, Plastic, Polycarbonate
ABS

Plate material

Polycarbonate
—

Keycaps

PBT
PBT

Weight

1,000 g
1,145 g

Dimensions

40 x 136 x 321 mm
43 x 406 x 139 mm

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2022
2026

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
  • WhatGeekCN

    Out of stock
    $89Visit
  • KeychronHK

    In stock
    $129Visit
  • AmazonGlobal

    Check price
    Visit

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