Case Thickness: 12mm; Case Size: 36mm; Band Width: 14mm; Inner Circumference: 190+/-5mm Band Material: Steel; Water Resistance: 5 ATM Packed in a Fossil Q Gift Box Battery Life: Up to 6 months; Compatibility: Android OS 5.0+, iPhone 5/iOS 9.0+, Smartphone App; Connectivity: Bluetooth Smart Enabled / 4.1 Low Energy Activity Tracker: Yes; Case Material: Steel; Heart Rate: No; Sleep Monitor: Yes; Interchangeable: Yes; Notifications: Yes; Touchscreen: No