Clean, cold, and striking – this automatic mechanical skeleton watch for men features a solid tarnish-resistant surgical-grade stainless case. Both the front and transparent back are made of scratch-resistant sapphire crystal. Whatever adventure awaits you, the Heimo Dante is ready. Never worry about batteries again. The Dantes are powered by your movement. A swing of your arm and the momentum gets added to the mainspring’s reserves by the weighted rotor. Can also be wound by turning the easy-to-use crown. Its signature cut-out dial and exhibition caseback give you a tantalizing view of the watch’s ticking heart. A secure, comfortable deployant clasp keeps it strapped to your wrist at all times. Designed in Denmark. Comes in a signature storage box. Case width: 1 3/4" (44 mm) Case depth: 1/2” (12 mm) Lug to lug: 2" (50 mm) Lug width: 7/8" (22 mm) Strap width: 4/5" (20 mm) Crown height: 1/5" (4 mm) Dial diameter: 1 1/2" (38 mm) Movement: ST1646 automatic mechanical movement Water resistance: 3 ATM / 30 m / 100 ft Weight: 6.14 oz (174 g) Max. wrist size: 8 3/8” (21.5 cm) Min. wrist size: 5 1/3” (13.5 cm) 316L stainless steel Sapphire crystal