Megadream Waterproof IP65 Intelligent Activity Fitness Tracker with Pedometer Tracking & Sleep Quality & Health Sport Monitoring Smart Wristband Fitness Tracker Bracelet for iPhone & Android - Black [Upgraded Version IP65 Waterproof Smart Watch] - With stylish and brightly appearance, TPU strap material, using medical grade hypoallergenic material and adjustable snap strap, the size can be adjusted according to the size of the wrist, more comfortable to wear, ultra light weight, 0.91 OLED screen displayCompatible for Android 4.4 & IOS 8.0 and Above. Multifunction - Support sports monitoring & sleep quality monitoring, it can be use as Message & Call Reminder, Pedometer, Fitness tracker, Healthy & Sports Assistant, etc Sport Monitoring - Anytime record the number of steps you walk, move distance and calorie consumption, so you real-time monitoring their movement index, based on your height, weight and other parameters accurately calculate calories burned, help you know yourself exactly Sleep Quality Monitoring - Fixed period of sleep monitoring 1800800), it will automatic to judge whether you had fall in sleep and your actual sleep situation from your moving. & According to your sleep quality, calculate the depth and shallow sleep time, so you have targeted to improve your living habits, sleep mode sleeping quality effectively USB Data Synchronization - low-power wireless data synchronization, syncs via iOS and Android APP. (Name: UP)- If you have any further question about installing or using the bracelet, please refer to the instruction or contact us.