DescriptionTrack your daily steps, calorie consumed, distance, monitor continuous heart rate, record the duration of exercise, average pace. Monitor your daily sleep quality, tell you how long and how well you sleep during the night. Set alarm and sedentary alert can silently remind you to wake up, take medicine or do some exercise.Features- Color: Black.- Material: Zine alloy and ABS.- Size: 25.8 x 3.47 x 1.13cm.-Version: BLE 4.0- Waterproof Level: IP67- Display Type: 1.3 inch colorful display- Touch Screen: Single touch control- Screen Resolution: 240 x 240 pixels- Battery Capacity: 180 mAh- System Requirement: Android 4.4, IOS 8.4.- This smart watch has a built-in heart rate monitor to help you understand your health.- A variety of sports selection modes - running, cycling, climbing, tracking your steps throughout the day, calorie consumption, walking distance and activity time, helping you better execute your fitness program.- This smart bracelet will automatically track your sleep duration and help improve your sleep quality.- Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you!