Number of Batteries: 1 Included: 1 Watch(es) Features: App Notifications, Heart Rate Monitor, Digital Display, Customizable Watch Faces, Alarm, Touch Screen Enabled, Pedometer, Rechargeable, Quick Ship Battery Type: Lithium Ion Jewelry Closure: Buckle Power Source: Battery (included) Tech Compatibility: Android, Apple Ios Tracking Capability: Heart Rate, Calories Burned, Distance, Time, Activity Tracking, Steps Watch Movement: Smart Watch Band Color: Purple Dial Color: Black Metal Color: Silver Tone Case Thickness: 12mm Case Width: 23.4mm Watch Band Length: 9 1/2 Inch Band Content: Silicone Case Materials: 100% Metal Alloy Band Width: 18mm Care: Wipe Clean Band Type: Strap Country of Origin: Imported Quick Ship items ship directly from the manufacturer within 3 to 5 business days. Photos are enlarged to show detail.