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Head to head · Prices checked Oct 21, 2026

GravaStar Mercury K1 vs Neo One of Zero Si75 HE

Get the Neo One of Zero Si75 HE for hall effect and rapid trigger.

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

Neo One of Zero Si75 HE

  • Hall effect (magnetic)

    No

    Yes

  • Rapid trigger

    No

    Yes

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired

  • Case material

    Aluminum

    ABS, Polycarbonate

  • Switch options

    Linear

    Magnetic

KeebFinder scores

How we score
  • GravaStar Mercury K1
  • Neo One of Zero Si75 HE
Performance
66
95
Build quality
67
70
Productivity
67
91
Customizability
64
74
Portability
92
65

What they share

  • Layout size: 75%
  • Hot-swappable
  • Mount style: Gasket Mount
See every spec side by side

Full specs

GravaStar Mercury K1 vs Neo One of Zero Si75 HE specs

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

11 of 24 specs differ

GravaStar Mercury K1

Neo One of Zero Si75 HE

Typing & switches

Switch options

Linear
Magnetic

Hall effect (magnetic)

No
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

No
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Max polling rate

—
8,000 Hz

Battery

8,000 mAh
Wired only

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS, Polycarbonate

Plate material

POM
Aluminum

Keycaps

—
PBT

Weight

1,080 g
—

Dimensions

46 x 343 x 156 mm
—

Backlight

RGB
RGB, south-facing

Firmware & software

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
    $114Visit
  • AmazonGlobal

    Check price
    ~$114Visit

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