Bulova Men's 44mm Marine Star Black Strap Chronograph Watch From the Marine Star Collection Stainless steel with dark blue dial, red accents, flat mineral glass, Six-hand calendar chronograph, and fold-over closure with pushers, safety bar and extender Movement: Quartz; Crystal: Mineral Case Diameter: 44 mm Case Thickness: 12.7 mm Water Resistance: 100M; in general, withstands splashes or brief immersion in water, but not suitable for swimming or bathing