Haverworks Theseus vs Sirius Ursa Major V2
Get the Sirius Ursa Major V2 for screw-in stabilizers.
![[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.
Haverworks Theseus
Sirius Ursa Major V2
Connection
Wired
Bluetooth, Wired
Case material
Aluminum, Polycarbonate
Aluminum
Weight
2,923 g
1,400 g
Plate material
Aluminum, Brass, CarbonFiber, FR4, Polycarbonate, POM
FR4
Screw-in stabilizers
No
Yes
- Haverworks Theseus
- Sirius Ursa Major V2
- Performance
- 8167
- Build quality
- 8882
- Productivity
- 9198
- Customizability
- 9491
- Portability
- 8090
- Hot-swappable
- Ergonomics: Split
- Knob
- QMK
- VIA
- Sound dampening
Haverworks Theseus vs Sirius Ursa Major V2 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 24 specs differ
Haverworks Theseus
Sirius Ursa Major V2
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB passthrough
USB-C
Case material
Plate material
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
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