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Head to head · Prices checked Oct 21, 2026

Jamesdonkey RS2 4.0 vs Keychron K10 Ultra

Get the Jamesdonkey RS2 4.0 for 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.

Jamesdonkey RS2 4.0

Keychron K10 Ultra

  • Layout size

    96%

    100%

  • Case material

    Aluminum

    ABS, Aluminum, Plastic

  • Switch options

    Linear

    Clicky, Linear, Tactile

  • Mount style

    Gasket Mount

    Plate Mount

  • Knob

    Yes

    No

KeebFinder scores

How we score
  • Jamesdonkey RS2 4.0
  • Keychron K10 Ultra
Performance
58
90
Build quality
71
83
Productivity
93
94
Customizability
82
91
Portability
53
56

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Battery: 4,000 mAh
  • QMK
  • 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 RS2 4.0

No owner reviews collected yet.

Keychron K10 Ultra

3.0

2 owner reviews

Praise
“Keychron has never let me down. I have paid a lot more for other keyboards from other manufacturers and received a lot less. I will never look elsewhere again”
Elijah R.· via Keychron
Critique
“I see why it was discounted. Fresh out of the box, it would not connect to my PC, which is literally 3 feet away. The 2.4G connection is extremely buggy, and I’ve had constant disconnects DAILY. On top of that, I had multiple sticking keys right out of the…”
Nicholas T.Verified buyer· via Keychron

Full specs

Jamesdonkey RS2 4.0 vs Keychron K10 Ultra specs

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

13 of 26 specs differ

Jamesdonkey RS2 4.0

Keychron K10 Ultra

Typing & switches

Switch options

Linear
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Plate Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

96%
100%

Layout standard

ANSI
ANSI, ISO, JIS

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Media keys

Yes
Yes

Connectivity & battery

Connection

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

Max polling rate

—
8,000 Hz

Battery

4,000 mAh
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS, Aluminum, Plastic

Plate material

—
Steel

Keycaps

PBT
PBT

Weight

1,150 g
1,495 g

Dimensions

34 x 405 x 138 mm
29 x 448 x 140 mm

Backlight

RGB
RGB, south-facing

Firmware & software

QMK

Yes
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.

  • MechkeysCN

    In stock
    $99Visit
  • AmazonGlobal

    Check price
    ~$99Visit
  • WhatGeekCN

    Out of stock
    $108Visit
  • KeychronHK

    In stock
    $114Visit
  • MKUS

    In stock
    $114Visit
  • Keychron (DE)DE

    In stock
    $150Visit
  • AmazonGlobal

    Check price
    Visit

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