MMD KM40 vs KEEBD Reviung 41Wireless or DIY Kit
Choose the pre-built MMD KM40 for wireless use and a ready-to-type build, or the KEEBD Reviung 41 if assembling a kit with an FR4 plate is the priority.
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5.0 (4)5.0 · 4 reviews
from$84at MonacoKeys
No reviews
from$95at KEEBD
Which one should you get?
Get the
MMD KM40
QMK
Build quality in the top 10% of 40% boards under $150.
- Pre-built, with switches and keycaps installed.
- CNC aluminum case, polycarbonate plate, and gasket mount.
- Bluetooth, 2.4 GHz, and USB-C wired connectivity, plus a 2000mAh battery.
Get the
KEEBD Reviung 41
Build quality in the bottom 10% of 40% boards under $150.
- DIY kit includes an FR4 switch plate and acrylic bottom plate and controller cover.
- Includes 41 Kailh hot-swap sockets.
- Includes screw-in stabilizers according to the product metadata.
Pick the MMD KM40 if you want a compact keyboard that is already assembled, supports wireless connections, and offers QMK/VIA customization. Choose the KEEBD Reviung 41 if the appeal is building a kit around its FR4 plate and acrylic parts, and you are prepared to provide the controller, switches, and keycaps it requires.
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 KM40
KEEBD Reviung 41
Case material
Aluminum
Acrylic, Plastic
Switch options
Linear, Tactile
Tactile
QMK
Yes
No
The deep option when you want to remap every key
VIA
Yes
No
GUI remapping without compiling firmware
Sound dampening
Yes
No
- MMD KM40
- KEEBD Reviung 41
- Performance
- 6042
- Build quality
- 8244
- Productivity
- 6949
- Customizability
- 8374
- Portability
- 8464
- Layout size: 40%
- Hot-swappable
What will you mostly use it for?
The KM40 has the clearest edge for buyers who want a ready-to-use board, wireless options, or documented key remapping. Its 2.4 GHz and wired modes also make it the more straightforward fit for gaming, without implying a performance advantage. Modders may prefer the Reviung 41's FR4 switch plate and acrylic components, while both boards support hot-swapping. The Reviung 41 is most compelling for someone specifically seeking a kit-building experience.
Pick the MMD KM40
- The KM40 offers wired USB-C and 2.4 GHz wireless connections.
- The Reviung 41 is a kit that requires a Pro Micro controller, switches, and keycaps before use.
MMD KM40 vs KEEBD Reviung 41 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 20 specs differ
MMD KM40
KEEBD Reviung 41
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Connection
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Backlight
QMK
VIA
Released
Compare prices
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MMD KM40 vs KEEBD Reviung 41: your questions
Yes. The KM40 supports Bluetooth and 2.4 GHz wireless, as well as wired USB-C connectivity. Its listed battery capacity is 2000mAh.
No, it is listed as a DIY kit or barebones keyboard. The vendor says you need a Pro Micro controller, 41 MX switches, and 41 MX keycaps to complete it.
The MMD KM40 metadata lists both QMK and VIA support. The Reviung 41 vendor listing mentions precompiled firmware but does not identify QMK or VIA.
Both have hot-swap support. The KM40 is described as a hot-swap pre-built keyboard, while the Reviung 41 kit includes 41 Kailh hot-swap sockets.
Its listed case material is aluminum, and its plate is polycarbonate. The vendor further describes a CNC aluminum case and Poron and IXPE sound-dampening materials.
The vendor lists an FR4 switch plate, PCB, acrylic bottom plate and controller cover, Kailh hot-swap sockets, hardware, and rubber feet. A Pro Micro controller, MX switches, and MX keycaps are listed as required to complete the build.
The MMD KM40 is the ready-to-use option, with switches and keycaps installed. The Reviung 41 is a kit that needs additional components and assembly.
The Reviung 41 product listing does not specify wireless connectivity. In contrast, the KM40 lists Bluetooth and 2.4 GHz wireless, alongside wired USB-C.
The KM40 is listed at 620 g and includes wireless connectivity, making its portability details clearer. No weight or wireless connection is specified for the Reviung 41.
Yes, the KM40 has RGB lighting. Its vendor description lists 22 lighting effects and 16 million colors.
The Reviung 41 is explicitly sold as a kit and includes an FR4 switch plate and acrylic parts. The KM40 is pre-built, though its hot-swap switches and QMK/VIA support provide customization options.
Neither product has a compatibility rule listed in its product metadata. The Reviung 41 vendor does specify that a Pro Micro controller, MX switches, and MX keycaps are required to complete the kit.
Not sold on either?
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