Tudor Calibre MT5602 Automatic Mechanical Movement, Analog Display, Black Dial with Silver Tone Hands and Index Hour Markers, Minute Markers around the Bezel, Luminescent Coating on Hands and Markers for Low Light Conditions, Uni-directional Rotating Bezel in Black PVD Stainless Steel, 26-Jewel Movement Running at 28800 vph (Approx. 70 Hours Power Reserve), Scratch-Resistant Sapphire Crystal, Solid Case Back, Round 41mm PVD Stainless Steel Case with Fold Over Clasp - Water Resistant to 200 Meters / 660 Feet