Compatible with most iOS 8.0 & Android 4.4 above smartphones. Download and install Free APP, bind this smartwatch in your cell phone,you can receive alerts of calendar, SMS, incoming calls and SNS (Facebook, WhatsApp, LinkedIn, Instagram, Twitter and more) on this watch;It will never let you miss any important things. Supports 9 sports such as Walking, running, bicycle , Hike, Mountaineering, Dynamic cycling, fitness, treadmill, Yoga. Accurately record all-day activities like steps, distance, calories burned, miles walked, active minutes. Can track all your workout routes, distances, and physical status during exercise. Stay motivated all day!