Built-in 400mAh capacity polymer lithium battery, it can have a 7-day long standby time when fully charged. It adopts high-sensitivity screen and large-digit dialing number keypad design, which is easy to operate and dials quickly. 1.44-inch large screen, high-definition pixel point-to-point display, and anti-blue light screen can better protect the baby's eyesight. High-definition front and rear dual cameras, with a solid metal shaft, flip structure, can be flipped up to 90 degrees at right angles, 360 rotation, free to open a new perspective for shooting. With built-in high-definition voice call technology, the watch and mobile phone can communicate with each other, making communication close at hand. Precise positioning, real-time viewing. Accurately record every corner of the child, fully meet the positioning needs of life and emergency situations. Electronic fence, always guarding the safety of children. Set the child's activity range, and when the child leaves the set area, the parent's mobile phone will receive an alarm prompt. Prevent getting lost, prevent entering dangerous areas, and prevent getting lost. Display: 1.44 inch High-definition Color Screen Phone Book Capacity: 10 Battery Capacity: 400mAh Mobile Phone Connection: IOS8.0 above, Android 4.4 above Material: Silicone Size: 58.53 x 44.56 x 19.93mm Color: Red, Green, Ice Blue(optional) Weight: 100g Package List: 1 x Kids Smart Watch