Not sure which keyboard to choose? Try the Keyboard Finder now!

Head to head · Prices checked Oct 21, 2026

Jamesdonkey RS2 3.0 vs Keychron K4 Pro

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 3.0

Keychron K4 Pro

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Bluetooth, Wired

  • Case material

    Aluminum

    ABS, Plastic

  • Switch options

    Linear

    Clicky, Linear, Tactile

  • Mount style

    Gasket Mount

    Tray Mount

  • Display

    Yes

    None

KeebFinder scores

How we score
  • Jamesdonkey RS2 3.0
  • Keychron K4 Pro
Performance
50
81
Build quality
72
84
Productivity
57
95
Customizability
59
96
Portability
52
54

What they share

  • Layout size: 96%
  • Hot-swappable
  • Battery: 4,000 mAh
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 3.0

No owner reviews collected yet.

Keychron K4 Pro

4.7

7 owner reviews

Praise
“I previously had a normal K4 and i love the new one, the only thing is that the stabilizers lube work is kinda bad and the space bar was very rattly but after some lube work the K4 pro retakes the perfect productivity keyboard.”
Adrian T.Verified buyer· via Keychron

Full specs

Jamesdonkey RS2 3.0 vs Keychron K4 Pro specs

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

18 of 26 specs differ

Jamesdonkey RS2 3.0

Keychron K4 Pro

Typing & switches

Switch options

Linear
Clicky, Linear, Tactile

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Tray Mount

Sound dampening

No
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

96%
96%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK

Ergonomics

Standard
Standard

Display

Yes
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, Wired

Max polling rate

—
1,000 Hz

Battery

4,000 mAh
4,000 mAh

USB-C

No
Yes

Build & materials

Case material

Aluminum
ABS, Plastic

Plate material

—
Steel

Keycaps

PBT
ABS, PBT

Weight

1,140 g
1,280 g

Dimensions

34 x 138 x 405 mm
31 x 391 x 139 mm

Typing angle

—
3°

Backlight

None
RGB, south-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
2022

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
    ~$157Visit
  • WhatGeekCN

    Out of stock
    $157Visit
  • KeychronHK

    In stock
    $69Visit
  • AmazonGlobal

    Check price
    Visit
  • Keychron (DE)DE

    Out of stock
    $120Visit

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Still torn?

Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.