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

Head to head · Prices checked Oct 21, 2026

Jamesdonkey RS2 4.0 vs Yunzii B98 PRO

Get the Yunzii B98 PRO for the 8,000 mAh battery and via.

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

Yunzii B98 PRO

  • Battery

    4,000 mAh

    8,000 mAh

  • Case material

    Aluminum

    Metal, Plastic

  • Display

    None

    OLED, LED

  • Weight

    1,150 g

    1,188 g

  • VIA

    No

    Yes

KeebFinder scores

How we score
  • Jamesdonkey RS2 4.0
  • Yunzii B98 PRO
Performance
58
84
Build quality
71
82
Productivity
93
93
Customizability
82
94
Portability
53
62

What they share

  • Layout size: 96%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Switch options: Linear
  • Mount style: Gasket Mount
  • Knob
See every spec side by side

Full specs

Jamesdonkey RS2 4.0 vs Yunzii B98 PRO specs

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

10 of 25 specs differ

Jamesdonkey RS2 4.0

Yunzii B98 PRO

Typing & switches

Switch options

Linear
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Layout

Layout size

96%
96%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-FR

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
OLED, LED

Media keys

Yes
Yes

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

4,000 mAh
8,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Metal, Plastic

Plate material

—
Aluminum

Keycaps

PBT
PBT

Weight

1,150 g
1,188 g

Dimensions

34 x 405 x 138 mm
49 x 414 x 142 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
  • YunziiCN

    In stock
    $91Visit
  • AmazonGlobal

    Check price
    Visit

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.