Classic design. Modern tech. This 44mm Julianna HR touchscreen smartwatch features a smoke stainless steel bracelet, speaker functionality, increased storage capacity and three smart battery modes to extend battery life for multiple days. Compatibility: Android 6.0+ (excluding Go edition), iOS 10.0+. Wear OS by Google and other related marks are trademarks of Google LLC. Touchscreen smartwatches powered with Wear OS by Google require a phone running Android OS 4.4+ (excluding Go edition) or iOS 9.3+. Supported features may vary between platforms. To avoid damage to your watch, only use with included charger. Do not use a USB hub, USB splitter, USB y-cable, battery pack or other peripheral device to charge. Product should be kept more than 20cm away from implanted medical devices to minimize potential for RF interference.