Formex Essence Fortythree White Features: Movement: Swiss Made Sellita SW200-1 (self-winding) Automatic (Chronometer grade), officially certified by COSC. 26 jewels and glucydur balance wheel. Custom-built skeleton rotor with thermally blued screws. Date display 38 hour power reserve Case diameter: 43mm Height: 10.6mm Lug width: 22mm Lug-to-lug: 49mm Water resistance: 100m Weight: 80g (case only) Case: Stainless steel 316L Sapphire crystal(front and back) with anti-reflection treatment Strap options: Italian calf leather straps with curved spring bars, Quick Release function and carbon fiber composite folding clasp with patented Micro-Adjustment System. Black rubber strap with curved spring bars, Quick Release function and carbon fiber composite folding clasp with patented Micro-Adjustment System. Stainless steel bracelet with Quick Release and Micro-extension function. BGW9 Super-LumiNova on hands and indexes Patented case suspension system for shock protection and wear comfort