Your child can use it to make phone calls and send voice messages. With the app, you can easily find your childs whereabouts and you always know where they are. In an emergency, child presses the large SOS button on the side of the watch and it will call the stored numbers automatically. If you wish, you can set a security area. As soon as your child leaves this area, your phone sounds an alarm. The clear and easy-to-read OLED display shows voice messages, time, date, battery charge level and signal quality. A step counter is also integrated.The smartwatch has a long battery life and can be easily charged with the included USB cable. So you and your child can stay in contact at all times. Support dial-back mode remote monitoring. (through a high-noise microphone can clearly hear the other partys environmental sound remotely.) Family number setting: Only the main binding person has the authority to set 4 family numbers. (the main binding person has the highest authority to set the watch, which has the highest security.) Notice: An active micro SIM card with data access is required to operate the item. A smartphone, tablet or similar is also required. and at least Android 4.0 / iOS 8.0 required to register and set up the item. Specifications: Model: Q50 Kids GPS Smart Watch Material: silicone, ABS, metal Size: length 47mm x width 39.3mm x thickness 15.65mm Chip: MT6261 Screen: LCD 0.96 inch Resolution: 96*64 Battery capacity: polymer 400mAH Standby time: 2 hours/standby 3 days Supported languages: Chinese, English, German, French, Portuguese, Spanish, Vietnamese, Turkish, Russian Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.