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Head to head · Prices checked Oct 21, 2026

Jamesdonkey S2 vs Keychron K5 Ultra

Get the Jamesdonkey S2 for the 3,000 mAh battery. Get the Keychron K5 Ultra for hot-swappable.

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.

Jamesdonkey S2

Keychron K5 Ultra

  • Layout size

    96%

    100%

  • Hot-swappable

    No

    Yes

  • Battery

    3,000 mAh

    2,600 mAh

  • Case material

    Aluminum

    ABS, Metal, Wood

  • Switch options

    Tactile

    Clicky, Linear, Tactile

KeebFinder scores

How we score
  • Jamesdonkey S2
  • Keychron K5 Ultra
Performance
52
91
Build quality
55
75
Productivity
60
93
Customizability
46
89
Portability
48
56

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Low profile
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

From real owners

What owners say

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

Jamesdonkey S2

No owner reviews collected yet.

Keychron K5 Ultra

5.0

4 owner reviews

Praise
“This keyboard is exactly what I was looking for. Low profile, great switches, not uber gamery. Very happy so far, hopefully it keeps working for a long time.”
StephenVerified buyer· via Keychron

Full specs

Jamesdonkey S2 vs Keychron K5 Ultra specs

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

14 of 23 specs differ

Jamesdonkey S2

Keychron K5 Ultra

Typing & switches

Switch options

Tactile
Clicky, Linear, Tactile

Hot-swappable

No
Yes

Low profile

Yes
Yes

Sound dampening

Yes
Yes

Layout

Layout size

96%
100%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-PT

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Connectivity & battery

Connection

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

Max polling rate

—
8,000 Hz

Battery

3,000 mAhBetter
2,600 mAh

USB-C

No
Yes

Build & materials

Case material

Aluminum
ABS, Metal, Wood

Plate material

—
Aluminum

Keycaps

PBT
PBT

Weight

600 g
566 g

Backlight

White
RGB, north-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
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
    ~$95Visit
  • WhatGeekCN

    Out of stock
    $95Visit
  • KeychronHK

    In stock
    $114Visit
  • Keychron (DE)DE

    In stock
    $145Visit
  • AmazonGlobal

    Check price
    Visit

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