Product description Color:Silver Classic Design. Modern Tech. This 40mm Venture HR touchscreen smartwatch features a stainless steel bracelet, and lets you track your heart rate, receive notifications, customize your dial and more. Smartwatches powered with Wear OS by Google are compatible with iPhone(R) and Android(TM) phones. 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. iPhone users cannot respond to messages or app notifications from the watch. iPhone users cannot ask Google Assistant for directions. The watch will only receive push notifications from navigation apps activated on the iPhone. 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. See product insert for full details. To maximize the battery life of your watch, try the following tips: CHANGE TO A BATTERY OPTIMIZED WATCH FACE: Some watch faces, especially those with animations or interactive abilities and brighter colors, use up more battery life than others. ADJUST SCREEN BRIGHTNESS: The brighter your watch screen, the more battery your watch will use. Turn down your watch screen brightness to save more battery power. Swipe down, tap the gear icon to access Settings, then tap Display to adjust brightness. TURN OFF NOTIFICATIONS YOU DON'T WANT: Turning off notifications can save your battery. Edit which alerts you receive in the Notifications section of the Wear OS by Google app. TURN ON THEATER MODE: Turn off the display and notifications by turning Theater mode on temporarily. Swipe down from the top of your screen, then tap the watch icon to enable Theater Mode. Turn your screen back on by pressing the middle button. AIRPLANE MODE: If your only interest is the time and functions that don’t require connectivity for updates, airplane mode lets you keep seeing what you care about most without draining your battery on other features. Swipe down, then tap the airplane.