MMD KM21 Ultra vs KEEBD Pee TwoWireless vs DIY
Choose the MMD KM21 Ultra for a ready-to-use numpad with wireless modes and four clickable knobs, or the KEEBD Pee Two if you want a DIY kit.
Which one should you get?
Get the
MMD KM21 Ultra
Wireless
- 17 hot-swappable keys and four clickable knobs, with knobs configurable through VIA.
- Tri-mode connectivity includes USB-C wired, 2.4 GHz, and Bluetooth.
- CNC-machined aluminum case with a top-mount structure.
- The product is listed as a numpad, so it does not replace a full keyboard.
- Buyers seeking a DIY kit may prefer the Pee Two's build-oriented format.
Get the
KEEBD Pee Two
DIY
- DIY kit format for buyers who want to assemble a numpad.
- The vendor lists build instructions for the Pee-Two.
- Kit options include a Dual Switch Kit and a Switch/Encoder Kit.
- The kit requires a ProMicro controller, MX switches, and one or two MX keycaps to complete.
- No wireless connectivity, battery, RGB, or case material is listed for the Pee Two.
- The product listing identifies it as a barebones kit rather than a pre-built numpad.
Pick the MMD KM21 Ultra if you want a ready-to-use numpad with wireless connectivity, hot-swap switches, QMK/VIA support, and four clickable knobs. Choose the KEEBD Pee Two if assembling a DIY kit is the priority and you are prepared to source its required controller, switches, and keycaps.
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.
MMD KM21 Ultra
KEEBD Pee Two
Hot-swappable
Yes
No
Knob
Yes
No
QMK
Yes
No
VIA
Yes
No
Sound dampening
Yes
No
- MMD KM21 Ultra
- KEEBD Pee Two
- Performance
- 6737
- Build quality
- 8239
- Productivity
- 8941
- Customizability
- 8949
- Portability
- 8662
- Layout size: Numpad
What will you mostly use it for?
The KM21 Ultra is the more complete choice for office input, programming shortcuts, travel setups, and creative controls, largely because it combines wireless connectivity with configurable keys and knobs. The Pee Two has the clearer appeal for buyers who specifically want a DIY build. For gaming, the KM21 Ultra offers more documented connection and control options, though neither product listing establishes gaming-specific performance details.
Pick the MMD KM21 Ultra
- The KM21 Ultra supports USB-C wired, 2.4 GHz, and Bluetooth connectivity.
- QMK/VIA support and four clickable, configurable knobs provide options for assigning shortcuts and controls.
MMD KM21 Ultra vs KEEBD Pee Two specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 18 specs differ
MMD KM21 Ultra
KEEBD Pee Two
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Battery
USB-C
Case material
Plate material
Backlight
QMK
VIA
Mac & Windows
Released
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MMD KM21 Ultra vs KEEBD Pee Two: your questions
The KM21 Ultra is a pre-built numpad with 17 hot-swap keys, four clickable knobs, and wired and wireless connectivity. The Pee Two is a DIY kit that requires additional components to complete.
Yes. The KM21 Ultra supports 2.4 GHz wireless and Bluetooth, as well as USB-C wired connectivity. It has a 980 mAh battery.
The Pee Two listing does not specify wireless connectivity or a battery. It is described as a kit, with a ProMicro controller listed among the parts required to complete it.
Yes, the KM21 Ultra has 17 hot-swap keys. It comes with MMD Cream linear switches pre-installed, according to the vendor description.
The Pee Two listing names a ProMicro controller, MX switches, and one or two MX keycaps as required components. It also lists build instructions.
The KM21 Ultra has four clickable knobs, and the vendor says they can be configured through VIA. Suggested uses include volume, zoom, and timeline scrubbing.
The Pee Two is the more direct fit if you want to build a numpad from a DIY kit, and its listing includes build instructions. The KM21 Ultra instead offers hot-swap switches and QMK/VIA support on a pre-built device.
Yes, the KM21 Ultra has RGB backlighting. The Pee Two is listed with RGB set to no.
The KM21 Ultra has a CNC-machined aluminum case and a plastic plate. Its vendor description also names PORON, IXPE, PET plate material, and bottom foam padding.
The KM21 Ultra is listed as pre-built and comes with MMD Cream linear switches and keycaps installed. The Pee Two is a barebones kit that requires additional parts to complete.
Its four clickable knobs can be assigned to functions such as zoom, volume, or timeline scrubbing, and its keys and knobs are configurable through QMK/VIA. The Pee Two listing does not specify comparable knob or software features.
Not sold on either?
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