The Empress Constance includes the following features - 316l surgical-quality stainless steel case, jeweled automatic movement, jewel bearings - 20 jewels, 36-hour power reserve, beats per hour (bph) - 21600/hour, sapphire-coated mineral crystal, brushed-finish sunray dial, crystal surround bezel, jewel-tipped crown, 316l surgical-quality stainless steel bracelet, logo-engraved stainless steel push-button deployment clasp, luminous hands, magnified date display, 37mm diameter, 5 ATM water resistance.