Bulova Marine Star men's chronograph watch. Chronograph function. Movement type Quartz. Case material Steel. Case diameter (mm) 43.00 Thickness (mm) 12.00 Weight (gr) 182.00. Screw-down caseback. Screw-down crown. Mineral glass. Steel strap. Deployment Buckle. Dial type Analog Color Green. Waterproof 10 Atm.