Sirius Ursa Major V2 vs PromoType KeyBoy Advance
Get the Sirius Ursa Major V2 for knob and qmk.
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![[In Stock] Ursa Major V2 Wireless Aluminum Ultimate Keyboard](https://cdn.shopify.com/s/files/1/0549/0262/0278/files/6c52287aa620d9b01f572bd83c42e80.png?v=1755679989&width=3840&quality=75)
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.
Sirius Ursa Major V2
PromoType KeyBoy Advance
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Case material
Aluminum
Aluminum, Polycarbonate
Knob
Yes
No
QMK
Yes
No
The deep option when you want to remap every key
VIA
Yes
No
GUI remapping without compiling firmware
- Sirius Ursa Major V2
- PromoType KeyBoy Advance
- Performance
- 6849
- Build quality
- 8263
- Productivity
- 9881
- Customizability
- 9165
- Portability
- 9088
- Hot-swappable
- Ergonomics: Split
- Sound dampening
Sirius Ursa Major V2 vs PromoType KeyBoy Advance specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 23 specs differ
Sirius Ursa Major V2
PromoType KeyBoy Advance
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
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