Alpina AL-525BW4S26B Startimer Pilot Automatic Black Dial ball watch dual curved sapphire crystal with

dual curved sapphire crystal with anti-reflective coating on the inner surface

and an anti-reflective sapphire crystal

as well as a uni-directional rotating elapsed timing bezel in a subtle two-tone to suggest the duality of light and dark within

anti-reflective coating on both sides

IC and an electro-magnetic brake to regulate the unwinding of the mainspring

Alpina AL-525BW4S26B Startimer Pilot Automatic Black Dial ball watch dual curved sapphire crystal withCaliber: AL 525 Movement: Automatic Power Reserve: 38 hour, 28'800 alt h Jewels: 26 Case: Brushed and polished stainless steel 2 part case Case Diameter: 41 mm Case Height: 11,50 mm Crystal: Scratch resistant convex sapphire crystal Water Resistant: up to 10ATM 100m 330ft Crown: Screw in crown Case Back: Engraved case back Dial: Black dial with mat finishing and applied white indexes with luminous treatment Outer ring with white seconds graduation,