Collection: Sekel Case Material: Stainless steel 316L Case Size: 41 mm Strap Material: Beige Italian vegetal tanned leather strap; Stainless steel buckle, quick release spring bars Strap Size: 20 mm Hands: Silver colored Dial: Blasted finish, black plated with printed numerals Crystal: Sapphire crystal Movement: Kronaby connected movement BT003, one sub dial, Bluetooth 5.0 Low Energy (BLE), vibration motor, accelerometer Battery: Battery Life up to 2 years (depending on use), CR3032 coin cell APP: Kronaby App working with (or later version) Android 5.0 and iOS 9 Water Resistant: 10 bar/ 100 metres