Global Positioning: GPS Operating System Compatibility: Android, Apple iOS Metrics Measured: Activity vs. inactivity, Altitude changes, Blood pressure, Cadence, Calories burned, Cycling speed, Distance traveled, Heart rate, Pace, Route, Speed, Steps taken Screen Size: 26.3 millimeters App Compatible: Yes Water Resistant: Yes Maximum Depth of Water Resistance: 164 feet Band Material: Silicone Product Set: With adjustable silicone band Additional Accessories Included: Power/data cable Mobile Notifications: Yes Water Resistant: Yes Form Factor: Wristwatch Product Type: Activity tracker, Smartwatch Sensors: Accelerometer, Heart rate sensor Multi-Sport Tracking: Yes Bluetooth: Yes Power: Charging Interface(s) Battery Strength Indicator: Yes Rechargeable: Yes Clock Display: Yes Display Type: Digital Color Display: Yes Band Color: Lava Red Band Type: Adjustable silicone band Minimum Wrist Size: 5.08 inches Maximum Wrist Size: 7.76 inches Product Length: 1.65 inches Product Width: 1.65 inches Product Weight: 0.29 ounces