Product Dimensions:10.04 x 1.57 x 0.47 inches Item Weight:1.2 ounces Batteries:1 Lithium Metal batteries required. (included) Item Weight:34 Grams Standing screen display size:1.4 Inches Tips: In order to maintain a comfortable and skin-friendly wearing experience, please do the following. Accurate Fitness Tracker with 9 Sport Modes This fitness tracker watch can accurately provide 24hrs heart rate monitoring, calories burned counter, steps counter, sleep monitoring and female cycle tracking. 9 sports modes are optional, including various outdoor and indoor activities, allow you to get the real-time stats during your workouts on the watch. You can also connect it to smartphone's GPS to track all your workout routes and distance traveled during exercise. Smart Watch Compatible with iPhone Android Phones- This smart watch is compatible with most iOS 8.0 & Android 4.4 or higher smart phones(Not for PC or tablet). Pair the smart watch to your phone and receive all incoming calls, messages, apps notifications straight to your smartwatch including Facebook, Instagram, Twitter, Whatsapp, and more. (Please note: only supports receiving calls and messages). 24/7 Heart Rate Monitor & Sleep Tracker This smart tracker watch will monitor your heart rate every 5 minutes all day; It also detect and track your sleep, and analyze your sleep quality automatically.(deep sleep, light sleep, and awake time). By connecting the smartwatch to your phone, the VeryFitPro app will provide detailed heart rate chart and comprehensive analysis of your sleep quality to help you stay active and stay healthy:) Long-lasting battery & IP68 Waterproof Smart Watch When fully-charged, this watch can last for up to 7 days or 30 days standby time. With IP68 waterproof, this fitness watch can meet the waterproof requirements of your daily activities such as washing hands or working out in the rain with it. Whether it's sweat or a small splash, just handle it with ease. Smart Watch for Women Men with More Practical Features This watch can fit for 6.2-9.2 inch wrist, suits for both women and men. It has many practical features, such as female menstrual cycle tracker, alarm clocks, music control, stopwatch, timer, deep breath guide, sedentary reminder. It's a also very good choice as gift for your friends and family members to help them stay motivated all day!