Number of Batteries: 1 Included: 1 Watch(es) Features: Alarm, App Notifications, Digital Display, Pedometer, Customizable Watch Faces, Stopwatch, Touch Screen Enabled, Date Function, Rechargeable, Quick Ship Battery Type: Lithium Ion Jewelry Closure: Buckle Power Source: Battery (included) Tech Compatibility: Android, Apple Ios Tracking Capability: Calories Burned, Distance, Time, Activity Tracking, Sleep Quality, Steps Watch Movement: Smart Watch Water Resistance: 30m Band Color: Black Dial Color: Black Metal Color: Black Case Thickness: 12mm Case Width: 43mm Watch Band Length: 9 1/2 Inch Band Content: Silicone Case Materials: 100% Metal Alloy Band Width: 20mm Care: Wipe Clean Country of Origin: Imported Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.