Never miss what matters, using your watch to receive and dial out. Receive notifications, e-mails, SMS and reminders directly on your wrist, and track all of your activity including steps, calories, distance , time, water and caffeine intake and heart rate. Compatible with Android and iOS operating systems. MB memory. Connectivity Proprietary operating system. Bluetooth 4 connection. Wi-Fi. Display information AMOLED screen. Touchscreen. 400 x 800 screen resolution. Battery 350mAh battery capacity. Typical usage time of up to 48 days. Low usage time of up to 7 days. Physical specification Size H42.2, D10.7mm. Features Water resistant. Dust resistant. Answer calls and make calls. Read texts. Receive social network notifications. View calendar. Displays weather. Music player. Heart rate monitor. Pedometer. Accelerometer. Accessories included: charging dock. Manufacturer's 2 year guarantee.