Comcome 25-30 Days Standby Time Fitness Track, Waterproof Smart Bracelet Activity Tracker Sport Wrist With Signal light Pls Refer to 6th Picture on the list for Sync Product. Connect and Sync data via bluetooth with IOS and Andriod smart phone or tablet, requires ios7.0 or above, Andriod 4.3 or above. Setting your goals of daily activities and it help you monitor, counting steps, distance, calories sleep cycles Reminder notifications, including call reminder, goal completion reminders, alarm clock with vibration Super long standby time, can last about 25-30 days with full charge Waterproof feature, can wear it when taking shower or doing daily washes.