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

Head to head · Prices checked Oct 21, 2026

MMD KM40 vs KEEBD Reviung 39 II

Get the MMD KM40 for qmk and via.

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.

MMD KM40

KEEBD Reviung 39 II

  • Case material

    Aluminum

    Acrylic, Plastic

  • Switch options

    Linear, Tactile

    Tactile

  • QMK

    Yes

    No

  • VIA

    Yes

    No

  • Sound dampening

    Yes

    No

KeebFinder scores

How we score
  • MMD KM40
  • KEEBD Reviung 39 II
Performance
61
42
Build quality
83
45
Productivity
69
49
Customizability
84
74
Portability
84
64

What they share

  • Layout size: 40%
  • Hot-swappable
See every spec side by side

From real owners

What owners say

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

MMD KM40

5.0

4 owner reviews

Praise
“Keycaps are dyesub, but still PBT Tactile switches feature a proper tactile feeling with great typing experience The case feels and looks really premium layer activation could be nicer but in the end you just gotta get used to the board”
Andi· via MonacoKeys

KEEBD Reviung 39 II

No owner reviews collected yet.

Full specs

MMD KM40 vs KEEBD Reviung 39 II specs

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

9 of 20 specs differ

MMD KM40

KEEBD Reviung 39 II

Typing & switches

Switch options

Linear, Tactile
Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

Yes
No

Screw-in stabilizers

No
Yes

Layout

Layout size

40%
40%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
—

Battery

2,000 mAh
—

USB-C

Yes
No

Build & materials

Case material

Aluminum
Acrylic, Plastic

Plate material

Polycarbonate
FR4

Keycaps

PBT
—

Weight

620 g
—

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

VIA

Yes
No

Extras

Released

2026
2021

Where to buy

Compare prices

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

MMD KM402 stores
  • MonacoKeysDE

    In stock
    $84Visit
  • AmazonGlobal

    Check price
    ~$84Visit
  • KEEBDAU

    In stock
    $90Visit
  • AmazonGlobal

    Check price
    ~$90Visit

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.

Still torn?

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