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Head to head · Prices checked Oct 21, 2026

Coolkiller CK108 HE vs Keychron K3 Ultra

Get the Coolkiller CK108 HE for hall effect and knob.

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 Ultra

  • Layout size

    100%

    75%

  • Hall effect (magnetic)

    Yes

    No

  • Case material

    Aluminum

    ABS, Wood

  • Switch options

    Magnetic

    Clicky, Linear, Tactile

  • Knob

    Yes

    No

KeebFinder scores

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

What they share

  • 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 Ultra

2.8

6 owner reviews

Praise
“I bought this keyboard to test for work. I love how sturdy it feels, the wood aspects make it feel premium as well. I opted for the banana switches, they do not disturb my colleagues and it feels great for everyday tasks. The battery also seems to hold out…”
Miroslav C.Verified buyer· via Keychron
Critique
“Meh. I dont like the wood grain and they make it difficult to return or exchange”
Magda V.Verified buyer· via Keychron

Full specs

Coolkiller CK108 HE vs Keychron K3 Ultra specs

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

11 of 25 specs differ

Coolkiller CK108 HE

Keychron K3 Ultra

Typing & switches

Switch options

Magnetic
Clicky, Linear, Tactile

Hall effect (magnetic)

Yes
No

Hot-swappable

Yes
Yes

Mount style

—
Plate Mount

Low profile

Yes
Yes

Sound dampening

No
Yes

Layout

Layout size

100%
75%

Layout standard

ANSI
ANSI, ISO

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

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

Max polling rate

—
8,000 Hz

Battery

—
2,600 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS, Wood

Plate material

—
Aluminum

Keycaps

—
PBT

Weight

1,500 g
—

Dimensions

30 x 430 x 125 mm
—

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

No
Yes

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
    ~$249Visit
  • WhatGeekCN

    Out of stock
    $249Visit
  • KeychronHK

    In stock
    $109Visit
  • MKUS

    In stock
    $109Visit
  • Keychron (DE)DE

    In stock
    $140Visit
  • AmazonGlobal

    Check price
    Visit

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