Blutooth GPS Child Locator Android Smart Watch Life Waterproof Children Positioning Watch Phone - Green Frequency: GSM 850/900/1800/1900MHZ;Screen: 0.96 Inch OLED Screen;Bluetooth Version: Bluetooth 3.0; waterproof and sweat,convenient for children use; Green design,health silicone,cold resistant and high temperature resistant; OLED screen, protect eyesight Emergency calling: Child can call for help by pressing SOS button in case of emergency, not only SoS help,but also can call your friend by watch; Precise localization: Guardian can obtain the child??s accurate location at any moment; Remote voice monitoring: Guardian can listen to the surrounding voices around the child; Remote alarm clock: Alarm clock can be set to warn the child to do something in his/her power; Electronic fence: Fence can be set to alarm the Guardian whenever the child enters or leaves the fence; Bi-directional calling: Child can call his/her friends while the Guardian can call the child at any time.