Fitness Tracker Pedometer SHONCO I5 Plus Waterproof Bluetooth Activity Tracker Smart Sports Band Bracelet Wristband with Touch Screen Calories Counter Health Sleep Monitor for iPhone Android Phones Steps taken at the very beginning will not be displayed immediately till your steps are getting steady..Find and insert to a USB Port of your PC/Laptop ,or Power Banks of the phone to charge the power directly for 30-40mins. Calculate steps, track walking distance, calorie consumption and monitor your sleep quality everyday. Gently remind you by vibration when there are any notifications or important phone calls coming in What's New: Updated App - 'Zeroner Health' brings various sport modes from which you can choose. Such as Walking, Climbing, Tennis, Push-ups etc. You can now check time & date horizontally or vertically of your choice on this upgraded device Long-term and large-area accidental water & oil contacts may do harm to its battery and lead to a failure waking-up device. Clean the USB chip part and keep it dry Compatible with Android & iOS smart phones. Such as iPhone 4s/5/5c/6, Note 4 etc. Smart phone OS should be Android 4.4 / iOS 7.0 or a higher OS based supports Bluetooth 4.0