Head to head · Prices checked Nov 7, 2026

Jamesdonkey R2 V2 vs Niz S104 EC

Get the Jamesdonkey R2 V2 for hot-swappable.

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Hot-swappable

from$179at Mechkeys

from$194at Mechkeys

Quick verdict

Which one should you get?

Get the

Jamesdonkey R2 V2

Hot-swappable

Build quality in the bottom 50% of 96% boards under $200.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

$179 at Mechkeys

Get the

Niz S104 EC

Build quality in the bottom 5% of 100% boards under $200.

Rules this board out

Switches are soldered. Swapping them means soldering.

$194 at Mechkeys

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 R2 V2

Niz S104 EC

Layout size
96%
100%
Connection
Bluetooth, 2.4 GHz, Wired
Wired
Wireless for several devices and wired for lower latency
Hot-swappable
Yes
No
Switch changes without soldering
Case material
Aluminum
Plastic
Weight
1,950 g
1,160 g
Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score

Jamesdonkey R2 V2
Niz S104 EC

Performance: 64
40
Build quality: 65
38
Productivity: 63
48
Customizability: 76
40
Portability: 52
42

What they share

Keycaps: PBT

See every spec side by side

Full specs

Jamesdonkey R2 V2 vs Niz S104 EC specs

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

12 of 19 specs differ

Spec

Jamesdonkey R2 V2

Niz S104 EC

Typing & switches

Hot-swappable

Yes

Mount style

Gasket Mount

—

Layout

Layout size

96%

100%

Layout standard

ANSI

Ergonomics

Standard

Display

None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Wired

Battery

4,000 mAh

Wired only

USB-C

Yes

Build & materials

Case material

Aluminum

Plastic

Plate material

FR4

—

Keycaps

PBT

Weight

1,950 g

1,160 g

Dimensions

31 x 151 x 414 mm

25 x 136 x 446 mm

Backlight

RGB, south-facing

None

Firmware & software

QMK

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2024

2023

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

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Lowest price across stores, Amazon excluded.

Jamesdonkey R2 V22 stores