Frederique Constant Highlife Heart Beat Automatic Stainless Steel Black Dial Interchangeable Black Rubber Strap Mens Watch Model# FC-310B4NH6B / FC310B4NH6B features a brushed and polished stainless steel case that holds the black globe design with an open balance dial. The dial has silver-tone & luminous hand indicators and index hour markers, convex sapphire crystal with anti-glare coating on both sides, and a transparent case back. The brushed and polished stainless steel bracelet has a push-button deployment clasp. The watch comes with an interchangeable black rubber strap with an easy strap changing system and runs on Swiss automatic movement, Caliber FC-310, 28'800 ALT/H, 38-hour power reserve, 26 jewels, and is water-resistant up to 50 meters/165 feet.