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Head to head · Prices checked Oct 21, 2026

MMD KM40 vs Sikakeyb SK1 Mountain City

Get the MMD KM40 for the 2,000 mAh battery and qmk.

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

Sikakeyb SK1 Mountain City

  • Layout size

    40%

    60%

  • Battery

    2,000 mAh

    1,900 mAh

  • Case material

    Aluminum

    Aluminum, Plastic

  • QMK

    Yes

    No

  • VIA

    Yes

    No

KeebFinder scores

How we score
  • MMD KM40
  • Sikakeyb SK1 Mountain City
Performance
61
44
Build quality
83
50
Productivity
69
50
Customizability
84
73
Portability
84
82

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • 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

Sikakeyb SK1 Mountain City

No owner reviews collected yet.

Full specs

MMD KM40 vs Sikakeyb SK1 Mountain City specs

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

9 of 20 specs differ

MMD KM40

Sikakeyb SK1 Mountain City

Typing & switches

Switch options

Linear, Tactile
—

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

Yes
No

Layout

Layout size

40%
60%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Connectivity & battery

Connection

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

Battery

2,000 mAhBetter
1,900 mAh

USB-C

Yes
No

Build & materials

Case material

Aluminum
Aluminum, Plastic

Plate material

Polycarbonate
—

Keycaps

PBT
—

Weight

620 g
—

Backlight

RGB
RGB

Firmware & software

QMK

Yes
No

VIA

Yes
No

Mac & Windows

No
Yes

Extras

Released

2026
2022

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
  • MechkeysCN

    In stock
    $99Visit
  • AmazonGlobal

    Check price
    ~$99Visit

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.

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