Not sure which keyboard to choose? Try the Keyboard Finder now!

Head to head · Prices checked Oct 25, 2026

Nuphy Air75 V3 vs MelGeek O2

Get the Nuphy Air75 V3 for hot-swappable and the 4,000 mAh battery.

KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

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 Air75 V3

MelGeek O2

  • Layout size

    75%

    Numpad

  • Hot-swappable

    Yes

    No

    Switch changes without soldering

  • Battery

    4,000 mAh

    2,500 mAh

    A larger battery means fewer cables during the day

  • Low profile

    Yes

    No

  • Case material

    ABS, Aluminum, Plastic, Polycarbonate

    ABS, Aluminum, Polycarbonate

KeebFinder scores

How we score
  • Nuphy Air75 V3
  • MelGeek O2
Performance
82
54
Build quality
88
65
Productivity
97
53
Customizability
98
50
Portability
81
82

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Max polling rate: 1,000 Hz
  • Mount style: Gasket Mount
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

Full specs

Nuphy Air75 V3 vs MelGeek O2 specs

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

19 of 28 specs differ

Nuphy Air75 V3

MelGeek O2

Typing & switches

Switch options

Clicky, Linear, Low-profile 3.0, Mechanical, Tactile
—

Hot-swappable

Yes
No

Mount style

Gasket Mount
Gasket Mount

Low profile

Yes
No

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

75%
Numpad

Layout standard

ANSI, ISO, ISO-DE, ISO-FR, ISO-UK, JIS
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
1,000 Hz

Battery

4,000 mAhBetter
2,500 mAh

USB-C

Yes
No

Build & materials

Case material

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

Plate material

Aluminum, Polycarbonate
Polycarbonate

Keycaps

PBT
PBT

Weight

750 g
650 g

Dimensions

13 x 319 x 129 mm
135 x 326 x 27 mm

Typing angle

10°, 5°
4°

Backlight

RGB, south-facing
RGB, north-facing

Firmware & software

QMK

Yes
No

VIA

Yes
No

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2024
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.

MelGeek O22 stores

Still torn?

Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.