? MULTI-FUNCTION - sync date and time, music control, distance tracking, notifications, remote camera control, anti-lost alert, find Phone, sports and health recording; Incoming call and sms reminder, Social software, message reminder, sedentary reminder. ? FASHIONABLE and ELEGANT DESIGN for WOMEN - The design combined with fashion and sports for ?women?. Tracker has 0.96 inch OLED display screen looks clearly; friendly rubber band is easy and comfortable to wear. The weight of SAVFY fitness tracker is very light that not feel anything on your wrist. ? SPORTS TRACKER PEDOMETER WATCHES - Provides calories burned information. It allows you to compare calories consumed to total calories burned, whether you're going for a jog or trying out a new boot camp class, it quantifies the intensity of your fitness activities using intensity minutes. With the features of pedometer and distance measure, it is easy to know how many steps you've taken and how far you've gone. ? AUTO HEART RATE and SLEEP MONITORING - Track heart rate continuously on your wrist to maximize workouts, better track calorie burn and get a clearer picture of your health; Automatically track your sleep duration and consistency. ? WIDER COMPATIBILITY & LONG-LASTING BATTERY - The App supports smart phones with Bluetooth 4.0.Support system: iOS 7.1 or above, Android 4.4 or above?Does NOT support iPhone 4?. Full charge requires only about 1 hours and the standby time can be up to 7 days with full power.