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Head to head · Prices checked Oct 21, 2026

Jamesdonkey A3 3.0 vs Keychron K3 HE

Get the Jamesdonkey A3 3.0 for the 3,750 mAh battery. Get the Keychron K3 HE for hall effect and rapid trigger.

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

Keychron K3 HE

  • Hall effect (magnetic)

    No

    Yes

  • Rapid trigger

    No

    Yes

  • Battery

    3,750 mAh

    2,600 mAh

  • Low profile

    No

    Yes

  • Mount style

    Gasket Mount

    Tray Mount

KeebFinder scores

How we score
  • Jamesdonkey A3 3.0
  • Keychron K3 HE
Performance
54
92
Build quality
60
86
Productivity
80
88
Customizability
82
89
Portability
76
82

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • QMK
  • 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 3.0

No owner reviews collected yet.

Keychron K3 HE

4.4

8 owner reviews

Praise
“I am happy with this keyboard! I needed some time to adjust my typing habits, but so far so good.”
Viacheslav M.Verified buyer· via Keychron
Critique
“please add a custom firmware file in your as the app can not recognize the keyboard and apparently doesn't have a correct firmware. the reset buttons do not work as well”
gio· via Keychron

Full specs

Jamesdonkey A3 3.0 vs Keychron K3 HE specs

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

15 of 29 specs differ

Jamesdonkey A3 3.0

Keychron K3 HE

Typing & switches

Switch options

—
Clicky, Linear, Magnetic, Tactile

Hall effect (magnetic)

No
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Tray Mount

Low profile

No
Yes

Sound dampening

Yes
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, JIS

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
LED

Media keys

Yes
No

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

3,750 mAhBetter
2,600 mAh

USB-C

No
Yes

Build & materials

Case material

—
ABS, Aluminum, Wood

Plate material

—
Aluminum

Keycaps

PBT
PBT

Weight

—
580 g

Dimensions

42 x 148 x 329 mm
25 x 319 x 126 mm

Typing angle

—
2°

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

Yes
Yes

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
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
  • KeychronHK

    In stock
    $119Visit
  • Keychron (DE)DE

    In stock
    $145Visit
  • AmazonGlobal

    Check price
    Visit

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