Tenacity Automatic Limited Edition 018/300 Swiss Sellita open heart 26 jewels self-winding SW 200-1 mechanical automatic movement with Novodiac shock protection Screw down titanium crown and case back Grade 2 titanium cantilever lug bridge individually screwed into case body Specifications Movement - Automatic Skeleton With 3 Hands Case material - Forged Carbon Case size (MM)- 45.0 case thickness (MM) - 14.0 Lug to Lug (MM) - 51.5 Dial color - Black Index with Swiss super luminova Lens - Anti Reflection Coated Sapphire Lens Crown type - Screw Down Band - 22mm Black Rubber/leather Strap EXTRA Black FKM Rubber Strap Water resistance - 20 ATM Watch weigh (G) - 91