Number of Batteries: 1 Features: Receives Calls, Rechargeable, Receives Texts, Vibration Alert, Alarm, App Notifications, Sleep Tracker, Heart Rate Monitor, Receives E-Mail, Date Function, Pedometer, Stopwatch, On Watch Workout, Digital Display, Customizable Watch Faces, Quick Ship Battery Type: Lithium Ion Jewelry Closure: Buckle Power Source: Battery (included) Tech Compatibility: Android, Apple Ios Tracking Capability: Time, Steps, Heart Rate, Hours Slept, Distance, Calories Burned, Activity Tracking Watch Movement: Smart Watch Band Color: Pink Dial Color: Multi-Color Metal Color: Rose Tone Case Thickness: 12.5mm Case Width: 43.2mm 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.