FITNESS, HEART RATE & SLEEP TRACKER: The fitness smartwatch precise optical heart rate monitoring allows you to accurately track real-time steps taken, all-day heart rate monitoring, distance traveled, calories burned, quality of sleep and sleeping patterns.1.4" HD DISPLAY: customized 1.4-inch stylish square screen with transparent 2.5D curved glass which offers a larger display area than a round watch face of the same width, so it can carry more information.Touch operation, USB charger and Battery170 mAh. Standby for about 15 days, use for about 7 days .Equipment requirements: Android 5.1, IOS 8.0 and above. Running, climbing, cycling, basketball and other forms of sports can detect your heart rate and calories in real time to provide better sports support.BLUETOOTH MUSIC CONTROL: Bluetooth Music Control allows you to directly control music from your smartwatch while workout without having to pull out your phone.IPX7 WATER RESISTANT: water resistant to a level of IPX7 and supports use in rainy days, do not need to take it off when you washing hands.