Jamesdonkey R2 V2 vs R4Numpad or Knob?

The R2 V2 has a numpad in its compact full-size layout. The R4 is a 75% layout and has no numpad.

The R4 measures 329 × 150 × 45 mm, while the R2 V2 measures 414 × 151 × 31 mm. The R4 is shorter and narrower by those listed dimensions, though it is taller.

The R4 is listed at 1900 g, while the R2 V2 is listed at 1950 g. The difference in listed weight is small, and both are substantial keyboards.

Both list Bluetooth, 2.4 GHz, and wired connectivity. Each also has a 4000mAh battery.

Yes, the R4 lists a multimedia volume knob and multimedia keys. The R2 V2 does not list those features.

The R4 vendor description says users can switch between gasket and top-mounted structures. It names silicone beans, silicone sleeves, and silicone sleeve strips as parts used for changing the structure.

The R2 V2 lists an FR4 plate. The R4’s listed specifications do not name a plate material.

Both list hot-swappable sockets, and the vendor descriptions specify full-key hot-swappable sockets. This lets buyers replace switches without choosing a different keyboard layout.

Both list QMK support, and both vendor descriptions say they are QMK compatible. The R2 V2 listing also explicitly includes Mac/Win support.

Both keyboards use south-facing LEDs. Their compatibility notes warn that shine-through legends stay dark and some sculpted keycaps can clip the LED.

The R4 vendor description specifies an RGB strip across the chassis, in addition to south-facing RGB LEDs. The R2 V2 description specifies keyboard backlighting but does not list a chassis light strip.

The R2 V2 vendor description states a response time of 1–2 ms. The R4 description states 2 ms.