Zuoya GMK21 Numpad vs Leobog K21Wired Control or Wireless
Choose the Zuoya GMK21 for QMK/VIA and its knob, or the Leobog K21 for Bluetooth and 2.4GHz wireless use.
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Which one should you get?
Get the
Zuoya GMK21 Numpad
Knob
Build quality in the top 10% of Numpad boards under $50.
- QMK and VIA compatible, according to the GMK21 vendor listing.
- Includes a knob with its 20-key numpad layout.
- 5-pin hot-swappable sockets allow switch changes without soldering.
Get the
Leobog K21
Sound dampening
Build quality in the top 50% of Numpad boards under $50.
- Supports Bluetooth, 2.4GHz wireless, and wired Type-C connections.
- Includes a 600mAh battery and is listed at 200g.
- PC plate and EVA foam are described as supporting a softer feel and sound absorption.
Pick the Zuoya GMK21 if QMK/VIA, a knob, and a DIY hot-swap kit matter more than wireless operation. Choose the Leobog K21 if you want Bluetooth or 2.4GHz connectivity, a listed battery, and a pre-built numpad. Both are ANSI numpads with hot-swappable switches, so the main trade-off is customization versus connection flexibility.
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.
Zuoya GMK21 Numpad
Leobog K21
Knob
Yes
No
QMK
Yes
No
The deep option when you want to remap every key
VIA
Yes
No
GUI remapping without compiling firmware
Sound dampening
No
Yes
N-key rollover
No
Yes
- Zuoya GMK21 Numpad
- Leobog K21
- Performance
- 6173
- Build quality
- 7960
- Productivity
- 6580
- Customizability
- 9470
- Portability
- 6589
- Layout size: Numpad
- Hot-swappable
What will you mostly use it for?
The K21 has the clearer fit for wireless setups, travel, and users who want a pre-built numpad with multiple connection modes. The GMK21 suits buyers who want firmware customization, a knob, and a DIY build. Both offer hot-swappable switches, so either can support switch changes. For gaming and office use, the K21's wireless options and listed N-Key Rollover give it the more directly specified feature set.
Pick the Leobog K21
- The K21 supports Bluetooth, 2.4GHz wireless, and wired Type-C connections.
- Its listing specifies N-Key Rollover.
- The vendor describes a PC mounting plate and EVA foam for a softer typing feel and sound absorption.
Zuoya GMK21 Numpad vs Leobog K21 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
8 of 22 specs differ
Zuoya GMK21 Numpad
Leobog K21
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
Compare prices
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Zuoya GMK21 Numpad vs Leobog K21: your questions
The GMK21 is a DIY numpad kit with QMK/VIA support and a knob. The K21 is listed as pre-built and supports Bluetooth, 2.4GHz wireless, and wired Type-C.
Yes, the K21 supports Bluetooth and 2.4GHz wireless. It also supports wired Type-C connectivity.
Yes, the GMK21 vendor listing identifies it as QMK/VIA compatible. It also specifies a knob and 20 keys.
Both models are listed as hot-swappable. The GMK21 vendor specifies 5-pin sockets, while the K21 vendor describes support for 3-pin and 5-pin switches.
The K21 has stronger travel-oriented specifications, including Bluetooth and 2.4GHz wireless, a 600mAh battery, and a listed weight of 200g. Its listed dimensions are 37 x 82 x 120 mm.
Yes, N-Key Rollover is listed for the K21. The GMK21 product information does not specify N-Key Rollover.
The GMK21 has the more explicitly documented customization options, with QMK/VIA support, a knob, and 5-pin hot-swappable sockets. The K21 is hot-swappable, but QMK or VIA support is not specified for it.
Sound dampening is listed as a K21 feature, and its vendor description specifically mentions EVA foam for sound absorption. The GMK21 listing does not specify sound-dampening materials.
The Leobog K21 is listed as pre-built. The Zuoya GMK21 is identified as a DIY kit/barebones product.
Both are listed with RGB lighting. The GMK21 vendor describes its backlight as multicolor, while the K21 is listed with RGB and white lighting.
The Zuoya GMK21 vendor listing specifies a knob alongside its 20 keys. A knob is not listed among the K21's features.
Yes, the K21 supports wired Type-C connectivity in addition to Bluetooth and 2.4GHz wireless. USB-C is also listed among its features.
Not sold on either?
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