Michael kors Smartwatch Case Thickness: 11 mm; Case Size: 42mm; Band Width: 18 mm; Band Circumference: 190+/- 5 mm; Band Material: Stainless Steel; Water Resistant: 1 ATM Compatibility: Android OS 4.3+ or iPhone 5/ iOS 9+; Connectivity: Bluetooth Smart Enabled / 4.1 Low Energy, Wi-Fi 802.11 b/g/n; Battery Life: 24 Hour Battery Life Based on usage Packed in …