Description: Unread message view, alarm clock reminder, long seat reminder, anti-lost reminder, stopwatch, distance, sleep monitor, call reminder, shake to take pictures More convenient while you are doing sports Soft material, safe and comfortable to wear. Anti-lost and stylish, convenient and helpful to use Specification: Item type: Smart Bracelet Material: PC+stainless steel Color: black, blue,red, purple, light green. Compatible system: Android 5.1，iOS 8.0 Type of battery: Polymer battery battery capacity: 90mAh Usage time:7-15days Charging method: USB Package includes: 1pc specification 1pc* USB cable Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement.