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Head to head · Prices checked Oct 21, 2026

Nuphy Halo75 V2 vs Jamesdonkey A3 3.0

Get the Nuphy Halo75 V2 for the 4,000 mAh battery and via. Get the Jamesdonkey A3 3.0 for knob.

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.

Nuphy Halo75 V2

Jamesdonkey A3 3.0

  • Battery

    4,000 mAh

    3,750 mAh

  • Knob

    No

    Yes

  • VIA

    Yes

    No

  • Backlight

    RGB, south-facing

    RGB

  • N-key rollover

    Yes

    No

KeebFinder scores

How we score
  • Nuphy Halo75 V2
  • Jamesdonkey A3 3.0
Performance
80
54
Build quality
81
60
Productivity
88
80
Customizability
89
82
Portability
81
76

What they share

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

Full specs

Nuphy Halo75 V2 vs Jamesdonkey A3 3.0 specs

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

7 of 26 specs differ

Nuphy Halo75 V2

Jamesdonkey A3 3.0

Typing & switches

Switch options

Mechanical
—

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Media keys

Yes
Yes

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

4,000 mAhBetter
3,750 mAh

USB-C

Yes
No

Build & materials

Case material

ABS, Aluminum
—

Plate material

POM
—

Keycaps

PBT
PBT

Weight

1,020 g
—

Dimensions

33 x 320 x 135 mm
42 x 148 x 329 mm

Typing angle

9°
—

Backlight

RGB, south-facing
RGB

Firmware & software

QMK

Yes
Yes

VIA

Yes
No

N-key rollover

Yes
No

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.

Lowest price across stores, Amazon excluded.

  • NuphyUS

    In stock
    $126Visit
  • AmazonGlobal

    Check price
    ~$126Visit
  • MechkeysCN

    In stock
    $89Visit
  • AmazonGlobal

    Check price
    ~$89Visit

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.

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