This device is designed to be used either by itself or your Android Smart Phone. It can be synchronized with your phone book and provides a variety of useful features and services to facilitate your work and leisure activities with smart technology. Features Include: Anti-lost function: When the Smart watch goes more than 10 meters distance from the mobile phone. your mobile phone will automatically alarm. Barometer: Open this function to display the current atmospheric pressure altitude and the current temperature. Altimeter: Calculates vertical downward and upward movements. Pedometer: Calculation of the walking distance and calorie consumption. Stopwatch: Time minutes and seconds. Bluetooth: Pair to make the connection between mobile phone and Smart watch. Phonebook: After synchronizing the watch can dial and display your contacts directly through your Smart watch. Notifier: User can receive Facebook, WhatsApp, SMS, Line and other sound reminders. To use this function your Smart Phone must have App BT Notification installed. (Only for Android) Music: User can play music when mobile phone is connected with Smart watch. Camera: Take remote pictures from your Smart watch. Sleep Monitoring: Display the result of your sleep quality during a certain amount of time. Packaged in a box Instruction Manual: It is recommended to read the user manual carefully and keep it for future reference. 3 month factory warranty Product Dimension: Box: 11cm (l) x 8cm (w) x 5cm (h) - Avail in: Black