The Aquarius AQ113 Fitness Tracker will accurately record all-day activities, including the steps, distance walked, calories consumed and activate minutes. Comes with multiple functions with a pedometer to track steps, calories, distance and time range, sleep quality monitor, sedentary alert, alarms, remote camera shooting, SNS, SMS and call alert. The sleep monitor with a silent alarm that will automatically recognize and monitor your sleep progress, show the deep, light sleep hours and record how long you sleep. The new fashion-forward look with the anti-lost strap is an updated Version ID115U, the traditional strap has been changed with the anti-lost strap. Meaning you don't need to worry about it being loose or not secure again. Wider Compatibility: Download "Veryfit Pro" app on your phone. It is compatible with android 4.4 or above, iOS 7.1 or above. (This model is without heart rate function.) Specifications Pedometer Range 0-99999 Steps Distance display 0-99999 km Calories 0-99