Fitbit Inspire 2 Fitness Tracker
Product Features Up to 10 Days of Battery Life Real-Time Stats in 20+ Activity Modes SmartTrack Automatic Activity Detection 24/7 Heart Rate Monitoring Swimproof Construction Female Health Tracking On-Screen Notifications Smartphone App Alerts Track the Quality of Your Sleep Calorie Count with Meal Logging Brand Fitbit Wireless Connectivity Bluetooth 4.0 LE Wireless Range 30' / 9.1 m Vibration Motor Yes Sensors Accelerometer, Optical Heart Rate OS Compatibility iOS 12.2 or LatermacOS 12.2Android 7 or Later Memory Retention 7 Days (Motion Data)30 Days (Daily Totals) Estimated Battery Life 10 Days Rechargeable Battery Chemistry Lithium-Ion Polymer Charging Time 2 Hours Band Material Silicone Band Circumference 5.5 to 7.1" / 14 to 18 cm7.1 to 8.7" / 18 to 22.1 cm Water Resistance Depth 164.04' / 50 m Splash Proof Yes Operating Altitude 28,000' / 8534 m Dimensions 1.47 x 0.66 x 0.5" / 3.73 x 1.68 x 1.27 cm Package Weight 0.19 lb Box Dimensions