ANDROID Men's AD650ABU Hercules Analog Automatic-Self-Wind Black Watch Round watch with partially skeletonized blue dial featuring gear-edge bezel, placed indices, and screw-down crown 50 mm ceramic case with anti-reflective sapphire dial window Automatic-self-wind movement with analog display Black ceramic band with deployant clasp Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving