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Head to head · Prices checked Nov 12, 2026

Keychron K4 V2 vs Apos NPKC RO75

Get the Apos NPKC RO75 for the 6,000 mAh battery and the 4,000 Hz polling rate.

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Keychron K4 Kabellose Mechanische Tastatur (German ISO-DE Layout) - Version 2

4.8 (1,198)

$59at Keychron

90-day low

RO75 Compact Keyboard

No reviews

$90at Apos

90-day low

Quick verdict

Which one should you get?

Get the

Keychron K4 V2

Build quality in the top 40% of 96% boards under $100.

Rules this board out

  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

Get the

Apos NPKC RO75

Battery

Build quality in the top 10% of 75% boards under $100.

Rules this board out

  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
  • No numpad.

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.

Keychron K4 V2

Apos NPKC RO75

  • Layout size

    96%

    75%

  • Connection

    Bluetooth, Wired

    Bluetooth, 2.4 GHz, Wired

    Wireless for several devices and wired for lower latency

  • Battery

    4,000 mAh

    6,000 mAh

    A larger battery means fewer cables during the day

  • Max polling rate

    1,000 Hz

    4,000 Hz

    Higher polling helps competitive FPS and does nothing for typing

  • Case material

    ABS, Aluminum, Plastic

    Aluminum

KeebFinder scores

How we score
  • Keychron K4 V2
  • Apos NPKC RO75
Performance
63
86
Build quality
70
82
Productivity
67
89
Customizability
70
82
Portability
55
91

What they share

  • Hot-swappable
See every spec side by side

Full specs

Keychron K4 V2 vs Apos NPKC RO75 specs

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

17 of 25 specs differ

Keychron K4 V2

Apos NPKC RO75

Typing & switches

Switch options

Clicky, Linear, Tactile
Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Plate Mount, Tray Mount
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

96%
75%

Layout standard

ANSI, ISO, ISO-DE, ISO-ES, ISO-Nordic, ISO-UK, JIS
ANSI

Ergonomics

Standard
Standard

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz
4,000 HzBetter

Battery

4,000 mAh
6,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS, Aluminum, Plastic
Aluminum

Plate material

Aluminum, Plastic
FR4, Polycarbonate

Keycaps

ABS
ABS, PBT

Weight

—
1,680 g

Dimensions

—
35 x 312 x 135 mm

Typing angle

—
15°

Backlight

RGB, north-facing
RGB

Firmware & software

VIA

No
Yes

VIAL

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2020
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.

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

Keychron K4 V2

Apos NPKC RO75

No ISO layout at the stores we track.

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