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Head to head · Prices checked Oct 21, 2026

Nuphy Air75 V2 vs Keychron K3 HE

Get the Nuphy Air75 V2 for the 4,000 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.

Nuphy Air75 V2

Keychron K3 HE

  • Hall effect (magnetic)

    No

    Yes

  • Rapid trigger

    No

    Yes

  • Battery

    4,000 mAh

    2,600 mAh

  • Case material

    ABS, Aluminum

    ABS, Aluminum, Wood

  • Switch options

    Linear, Low-profile Mechanical, Tactile

    Clicky, Linear, Magnetic, Tactile

KeebFinder scores

How we score
  • Nuphy Air75 V2
  • Keychron K3 HE
Performance
81
92
Build quality
80
86
Productivity
89
88
Customizability
94
89
Portability
79
82

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Low profile
  • Max polling rate: 1,000 Hz
  • QMK
See every spec side by side

From real owners

What owners say

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

Nuphy Air75 V2

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

Nuphy Air75 V2 vs Keychron K3 HE specs

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

13 of 28 specs differ

Nuphy Air75 V2

Keychron K3 HE

Typing & switches

Switch options

Linear, Low-profile Mechanical, Tactile
Clicky, Linear, Magnetic, Tactile

Hall effect (magnetic)

No
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
Yes

Mount style

—
Tray Mount

Low profile

Yes
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

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
1,000 Hz

Battery

4,000 mAhBetter
2,600 mAh

USB-C

Yes
Yes

Build & materials

Case material

ABS, Aluminum
ABS, Aluminum, Wood

Plate material

Aluminum
Aluminum

Keycaps

PBT
PBT

Weight

598 g
580 g

Dimensions

14 x 316 x 133 mm
25 x 319 x 126 mm

Typing angle

9°
2°

Backlight

RGB, south-facing
RGB, north-facing

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
2026

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
    $75Visit
  • AmazonGlobal

    Check price
    ~$75Visit
  • ktechsSG

    Out of stock
    $160Visit
  • KeychronHK

    In stock
    $119Visit
  • Keychron (DE)DE

    In stock
    $145Visit
  • AmazonGlobal

    Check price
    Visit

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