Tech Specs Operating System: Powered with Wear OS by Google Compatibility: Wear OS by Google works with phones running the latest version of Android™ (excluding Go edition and phones without Google Play Store) or iOS. Supported features may vary between platforms and countries with compatibility subject to change. Processor: Qualcomm® Snapdragon™ Wear 3100 Memory: 1GB RAM, 8GB Storage Display: 1.28" AMOLED / 416 x 416 / 328ppi Input: 2 Additional Push Buttons (configurable), Rotating Home Button, Touchscreen, Voice Sound/Actuator: Loudspeaker, Microphone, Vibration Connectivity: Bluetooth 4.2 LE, GPS, NFC, WiFi Sensors: Accelerometer, Altimeter, Ambient Light, Compass, Gyroscope, Off-body IR, PPG Heart Rate Battery: 24 Hr + multi day Extended Mode **Varies based on usage and after updates install**. USB cable with magnetic charger snaps to rings on watch caseback and spins 360 degrees for ease of use. 60 minutes to reach 80%. Water Resistance: 3 ATM