Sinn 903 H4
chronograph by Sinn.
Unlike the other navigation chronographs of Sinn (Sinn 903 St), which are provided with self-winding movement, this model operates in the classic way with manual winding. Thereby via glass bottom an unobstructed view of the movement opens up, because no rotor prevents the free view.
- Ø 41 mm, height 13.4 mm
- Integrated rotating bezel with logarithmic scale division, bidirectional rotating via crown at 8 o'clock
- Crowns with double O-ring seal, unverschraubbar
- Waterproof to 100 m, low pressure resistant
- Slide rule function
- Anthracite mat galvanised dial
- Counters black glossy galvanised, hour indexes coated with special long-lasting, luminous paint, UV-resistant
- 2 years