This smart kid anti lost watch is fully functional， including GPS + base station + wifi， Mobile phone or Computer GPRS service platform， SOS Emergency Call， GPRS real-time location，trace， monitor， Take Off Alarm， Telephone book and Voice Intercom and so on. These functions will strengthen you and child's relation， make you know the latest location of your kids anytime anywhere.Features:* GPS + base station + wifi， three loctation modes.(wifi need hardware to support)* Mobile phone or Computer GPRS service platform， double control modes.* GPRS real-time location， trace， monitor.* Telephone book， inter-phone， health and trace.* Watch alarm， safety area and SOS emergency alert.* Watch remove alert， low power alarm and remote power off.Specifications:GSM: MT6261GPS: MT3337GPS Channel: 20ChannelGPS Senstivity: -159DBScreen: color screenGPS Positioning Accuracy: 5-15MLBS Positioning Accuracy: 100-1000MGPS Antenna: High sensitivity active ceramic antennaGSM Antenna: FPC AntennaFrequency: GSM 850/900/1800/1900MHzBattery: Gel polymer 400mASpeaker: Minimum Speaker 1609Gravity Sensor: SupportI/O Interface: Microphone jack 5PRN， charge over USBButton: 1 button， 2 button， On-Off button， SOS button30 Sounds Upload: About 8 hours standby10 Minutes Upload: About 50 hours standby1 Hour Upload: About 4 days standbyLanguage: EnglishLens Material: Tempered plexiglass glassWatch Case Paint: Conventional rubber oilColor: yellow，blue，pink (optional)Package Size: Approx.12.1*8.4*6.8cm/4.76*3.31*2.68inPackage Weight: Approx.165g/5.84ozPackage List:1 * GPS Smart Watch1 * USB Cable