Collection: Sekel Case Material: Stainless steel 316L Case Size: 41 mm Strap Material: Stainless steel 316L, with butterfly buckle Strap Size: 19.80 mm Hands: Couleur argentée Dial: Silver brushed sunray dial with applied indexes Crystal: Double domed sapphire crystal with AR coating Movement: Kronaby connected movement BT003, 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