World premiere: the Aurora Chronograph is the first watch ever featuring the unique trigalightA(R)-hairlight self activated illumination technology. The glass tubes set on the dial have an outer diameter of microscopical 0.3 mm (corresponding to the diameter of 5 hairs) and an inner diameter of 0.1 mm. Case made of stainless steel A~ 46 mm, unidirectional rotating bezel, sapphire crystal, 10 ATM / 10 bar water resistant. Features Illumination: trigalightA(R) Movement: Swiss Made quartz chrono Size: A~ 46 mm Glass: anti-reflective sapphire Watch Case: stainless steel Dial: black Bezel: uni-directional, stainless steel Strap / Bracelet: stainless steel Water Resistance: 10 ATM / 10 bar