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Head to head · Prices checked Oct 21, 2026

Coolkiller CK108 HE vs Keychron K3 HE

Get the Coolkiller CK108 HE for knob. Get the Keychron K3 HE for 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.

Coolkiller CK108 HE

Keychron K3 HE

  • Layout size

    100%

    75%

  • Rapid trigger

    No

    Yes

  • Case material

    Aluminum

    ABS, Aluminum, Wood

  • Switch options

    Magnetic

    Clicky, Linear, Magnetic, Tactile

  • Knob

    Yes

    No

KeebFinder scores

How we score
  • Coolkiller CK108 HE
  • Keychron K3 HE
Performance
76
92
Build quality
57
86
Productivity
78
88
Customizability
69
89
Portability
53
82

What they share

  • Hall effect (magnetic)
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Low profile
See every spec side by side

From real owners

What owners say

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

Coolkiller CK108 HE

No owner reviews collected yet.

Keychron K3 HE

4.4

8 owner reviews

Praise
“I am happy with this keyboard! I needed some time to adjust my typing habits, but so far so good.”
Viacheslav M.Verified buyer· via Keychron
Critique
“please add a custom firmware file in your as the app can not recognize the keyboard and apparently doesn't have a correct firmware. the reset buttons do not work as well”
gio· via Keychron

Full specs

Coolkiller CK108 HE vs Keychron K3 HE specs

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

15 of 28 specs differ

Coolkiller CK108 HE

Keychron K3 HE

Typing & switches

Switch options

Magnetic
Clicky, Linear, Magnetic, Tactile

Hall effect (magnetic)

Yes
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
Yes

Mount style

—
Tray Mount

Low profile

Yes
Yes

Sound dampening

No
Yes

Layout

Layout size

100%
75%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, JIS

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
LED

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

—
2,600 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS, Aluminum, Wood

Plate material

—
Aluminum

Keycaps

—
PBT

Weight

1,500 g
580 g

Dimensions

30 x 430 x 125 mm
25 x 319 x 126 mm

Typing angle

—
2°

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

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
    ~$249Visit
  • WhatGeekCN

    Out of stock
    $249Visit
  • KeychronHK

    In stock
    $119Visit
  • Keychron (DE)DE

    In stock
    $145Visit
  • AmazonGlobal

    Check price
    Visit

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