Case
- Material
- stainless steel
- Height
- 6,1 mm
- Width
- 27,5 mm
- Length
- 27,5 mm
- Case back
- stainless steel
- Watch glass
- sapphire crystal
- Diamond bezel
- No
- Water resistance
- 3 bar
Movement
- Movement type
- hand-wound movement
- Caliber
- Alpha
- Manufacture caliber
- Power Reserve
- 43 Hours
Functions
- Second
- small seconds
Dial
- Dial color
- silver
- Hour marker
- Arabic/hour markers
Strap
- Bracelet material
- cordovan
- Bracelet color
- black
- Clasp material
- stainless steel
- Clasp color
- pin clasp
Manufacturer specifications
- Reference
- 401
- Warranty
- 2 years’ manufacturer warranty plus 1 year Wempe warranty
The Tetra model is the four-cornered sister of the Tangente. Its typography, however, happens to be more similar than identical, with the sans-serif digits adding a slightly more modern touch. The stainless-steel case measures 27.5 x 27.5 x 6.3 millimeters and houses an Alpha hand-wound movement, visible through the sapphire-crystal case back. The Tetra sports a suede strap made of calfskin.












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