The Reign Stavros includes the following features: 316l surgical-quality stainless steel case, jeweled automatic miyota 8n24 movement, jewel bearings: 20 jewels, 41 hour power reserve, beats per hour (bph): 21600/hour, sapphire-coated mineral crystal, skeleton dial, observation caseback to view movement, logo-engraved crown, genuine leather crocodile-embossed strap, logo-engraved stainless steel clasp, luminous hands, luminous markers, 44mm diameter, 5 ATM water resistance. Reign Men's Stavros Automatic Skeleton Leather-Band Watch in Black