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Head to head · Prices checked Oct 21, 2026

GravaStar Mercury K1 vs LUMINKEY Lumino75

Get the GravaStar Mercury K1 for the 8,000 mAh battery. Get the LUMINKEY Lumino75 for via and sound dampening.

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.

GravaStar Mercury K1

LUMINKEY Lumino75

  • Battery

    8,000 mAh

    4,400 mAh

  • Display

    None

    Yes

  • VIA

    No

    Yes

  • Sound dampening

    No

    Yes

  • Plate material

    POM

    Polycarbonate

KeebFinder scores

How we score
  • GravaStar Mercury K1
  • LUMINKEY Lumino75
Performance
66
68
Build quality
67
79
Productivity
67
84
Customizability
64
78
Portability
92
81

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Case material: Aluminum
  • Mount style: Gasket Mount
See every spec side by side

Full specs

GravaStar Mercury K1 vs LUMINKEY Lumino75 specs

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

7 of 22 specs differ

GravaStar Mercury K1

LUMINKEY Lumino75

Typing & switches

Switch options

Linear
—

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
Yes

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

8,000 mAhBetter
4,400 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum

Plate material

POM
Polycarbonate

Keycaps

—
PBT

Weight

1,080 g
—

Dimensions

46 x 343 x 156 mm
—

Typing angle

—
7°

Backlight

RGB
RGB, south-facing

Firmware & software

VIA

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2026

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • AmazonGlobal

    Check price
    ~$139Visit
  • WhatGeekCN

    Out of stock
    $139Visit
  • MKUS

    In stock
    $149Visit
  • AmazonGlobal

    Check price
    ~$149Visit

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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