This classic design features a silver-tone Super Titanium™ case that is 40% lighter and five times harder than stainless steel that is complemented by a brown leather strap with stitching detail, green dial with day and date, luminous hands and markers, anti-reflective sapphire crystal, has a buckle closure and is water resistant to 100 meters. Featuring our sustainably light-powered Eco-Drive technology that never needs a battery. Caliber number E101. Case size 42MM