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Head to head · Prices checked Oct 31, 2026

Epomaker Luma40 vs Redragon UCAL K673 Pro

Get the Redragon UCAL K673 Pro for the 4,000 mAh battery.

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EPOMAKER LUMA40

Epomaker Luma40

5.0 · 3 reviews

from$92at Epomaker

90-day low

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.
  • Compact layout only. No function row, dedicated arrow keys, or numpad.

Get the

Redragon UCAL K673 Pro

Battery

Build quality in the bottom 45% of 75% boards under $100.

Rules this board out

  • 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.

Epomaker Luma40

Redragon UCAL K673 Pro

  • Layout size

    40%

    75%

  • Battery

    1,450 mAh

    4,000 mAh

    A larger battery means fewer cables during the day

  • Low profile

    Yes

    No

  • Ergonomics

    Ortholinear

    Standard

  • Case material

    Aluminum

    Plastic

KeebFinder scores

How we score
  • Epomaker Luma40
  • Redragon UCAL K673 Pro
Performance
74
65
Build quality
81
62
Productivity
88
69
Customizability
85
58
Portability
85
75

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Sound dampening
See every spec side by side

Full specs

Epomaker Luma40 vs Redragon UCAL K673 Pro specs

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

17 of 25 specs differ

Epomaker Luma40

Redragon UCAL K673 Pro

Typing & switches

Switch options

Clicky, Linear
Linear

Hot-swappable

Yes
Yes

Mount style

Tray Mount
Gasket Mount

Low profile

Yes
No

Sound dampening

Yes
Yes

Layout

Layout size

40%
75%

Layout standard

ANSI
ANSI

Ergonomics

Ortholinear
Standard

Knob

No
Yes

Display

None
None

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

1,450 mAh
4,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Plastic

Plate material

Polycarbonate
—

Keycaps

PC
PBT

Weight

410 g
1,200 g

Dimensions

21 x 240 x 87 mm
37 x 335 x 37 mm

Backlight

RGB, north-facing
RGB

Firmware & software

QMK

Yes
No

VIA

Yes
No

N-key rollover

Yes
No

Mac & Windows

Yes
No

Extras

Released

2025
2023

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

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Lowest price across stores, Amazon excluded.

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