Smartwatches built with wear OS by Google are compatible with iphone and Android phones. Wear OS by Google and other related marks are trademarks of Google llc. Touchscreen Smartwatches built with wear OS by Google require a phone running Android OS 6. 0 (excluding go edition) or iOS 10. Supported features may vary between platforms Heart Rate & Activity Tracking using Google Fit to track your at-home workouts; Built-in GPS for distance tracking; Swimproof design 5ATM; Responses from Google Assistant - it’s your own personal Google, always ready to help; Take advantage of contactless pay with your watch using Google Pay This is one smart watch - Make the most of your down time with a smartwatch that helps with every activity. Stay connected to friends and family with phone calls and messages right on your wrist. Keep tabs on your health with guided breathing exercises, custom goal & alarm settings Estimated 24 hour Battery Life, Based on usage plus 2 additional days in low-power mode; magnetic usb rapid Charger included; charge UP to 80 percent in under an hour For style that works as hard as you do, this 48mm Axial touchscreen smartwatch includes a bold Blue denim Strap, stainless steel case and fearless functionality with wear OS by Google technology Material: Stainless Steel and genuine leather, case size: 48mm, case Thickness: 10mm, water resistant up to 50m: Wearable while swimming in shallow water