Collection: Sekel Case Material: Stainless steel 316L, Rose gold tone PVD Case Size: 43 mm Strap Material: Brown leather strap with croco pattern, Rose gold tone PVD stainless steel buckle Strap Size: 22 mm Hands: Rose gold tone plated with Super Luminova Dial: Sunray brushed sterling silver plated with Rose gold applied indexes, Super Luminova markers Crystal: Double domed sapphire crystal with AR coating Movement: Kronaby connected movement BT001, 2 pcs 2- hand-bi-directional micro stepping motors, Bluetooth 4.1 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