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Head to head · Prices checked Oct 31, 2026

Epomaker Luma40 vs Keychron K4 Pro

Get the Keychron K4 Pro for the 4,000 mAh battery.

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Quick verdict

Which one should you get?

Get the

Epomaker Luma40

Build quality in the top 15% of 40% boards under $150.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
  • Compact layout only. No function row, dedicated arrow keys, or numpad.

Get the

Keychron K4 Pro

Battery

Build quality in the top 10% of 96% boards under $100.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

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.

Epomaker Luma40

Keychron K4 Pro

  • Layout size

    40%

    96%

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Bluetooth, Wired

    Wireless for several devices and wired for lower latency

  • Battery

    1,450 mAh

    4,000 mAh

    A larger battery means fewer cables during the day

  • Low profile

    Yes

    No

  • Ergonomics

    Ortholinear

    Standard

KeebFinder scores

How we score
  • Epomaker Luma40
  • Keychron K4 Pro
Performance
74
81
Build quality
81
84
Productivity
88
95
Customizability
85
96
Portability
85
54

What they share

  • Hot-swappable
  • Max polling rate: 1,000 Hz
  • Mount style: Tray Mount
  • QMK
  • VIA
  • Sound dampening
See every spec side by side

From real owners

What owners say

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

Epomaker Luma40

5.0

3 owner reviews

Praise
“Hello there the luma 40 is one of my favorite keebs i used i can bring it anywhere with me i really love it thanks u guys”
Sajad m.Verified buyer· via Epomaker

Keychron K4 Pro

4.7

7 owner reviews

Praise
“I previously had a normal K4 and i love the new one, the only thing is that the stabilizers lube work is kinda bad and the space bar was very rattly but after some lube work the K4 pro retakes the perfect productivity keyboard.”
Adrian T.Verified buyer· via Keychron

Full specs

Epomaker Luma40 vs Keychron K4 Pro specs

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

16 of 27 specs differ

Epomaker Luma40

Keychron K4 Pro

Typing & switches

Switch options

Clicky, Linear
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Tray Mount
Tray Mount

Low profile

Yes
No

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

40%
96%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK

Ergonomics

Ortholinear
Standard

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired

Max polling rate

1,000 Hz
1,000 Hz

Battery

1,450 mAh
4,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS, Plastic

Plate material

Polycarbonate
Steel

Keycaps

PC
ABS, PBT

Weight

410 g
1,280 g

Dimensions

21 x 240 x 87 mm
31 x 391 x 139 mm

Typing angle

—
3°

Backlight

RGB, north-facing
RGB, south-facing

Firmware & software

QMK

Yes
Yes

VIA

Yes
Yes

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2025
2022

For EU buyers

ISO layouts by store

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

Epomaker Luma40

No ISO layout at the stores we track.

Keychron K4 Pro

  • Keychron

    ISO-DE, ISO-UK, ISO-Nordic, ISO-FR, ISO-ES, ISO-SW

    In stockShips to you

  • Keychron (DE)

    ISO-DE, ISO-UK, ISO-FR, ISO-ES, ISO-SW

    Out of stockDoes not ship to you

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.

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