Product Name: Q50 children watch phoneMobile band: 850/900/1800/1900 Four BandNetwork standard: GSM card (GSM)， CDMA card can not be usedGSM.GPS:MTK6261 UBX7020GPRS:Class 12.TCP IP Build in GSm MODULEGPS sensitivity:-159dbmGPS accuracy:10M(2D RM)GSM accuracy:20-200MSpeed accuracy:0.1M SecondBattery:3.7V 320mAWork Temperature:-20~70Humidity:20%~80%RHDimensions:45.0(L)*32.0(W)*13.0(H)mmNet Weight:35.1g Gross Weight:128g Special features:1) SOS Button for help: in case of emergency， the child can dial the emergency number for help; Long press wheel dial the preset emergency number， connect automatically stop the wheel. 2) Dual positioning: GPS satellites and dual monitoring base station positioning all real-time location tracking. 3) Remote monitoring: can set up a monitoring number， parents can issue commands in the mobile terminal and listen to the voices of children around. 4) Two-way conversation: Support calls function in case of an emergency can urgently by SOS function keys to the binding number of rescue. 5) Electronic fence， intelligent province electricity 6) History: four frequency GSM system 7) Pedometer， time display: watch time automatic synchronization with satellite， it is convenience to setting time. Packing:Smart Watch x1 Cable x1 User Manual x1