Advanced Design:smart watch phone design with micro sim card slotyou can call and surf the internet with a micro sim card.support 3G WCDMA 2100MHz and GSM 850/900/1800/1900MHz.support 2 way phone call(need APP)</br>GPS Watch:with Android OSsmart and safer.built-in GPS and SOS buttonalways keep your kids safe.</br>90 Degree Rotatable Camera:built-in a 2.0MP high definition camerayou can take photos for you kids.</br>High Quality:with 1.54 inch 240*240 resolution colorful sensitive touch screenthe strap is made of soft siliconeenvironmental protection and comfortable.</br>Other Features:electronic fence and smart alarm warning kids stay away the dangerous place such as water and road.built-in Wechat suppport sending text and picture.friend-addphone booksteps countschedulemath learning.make your children happy to learn and grow.</br></br>Product Description</br></br>This watch do not compatible with SIM or Nano SIM.there is no micro sim card includedwe recommend you buy a AT&T sim(NOT support for Verizon or Sprint CDMA sim).<br><br><b>Parameter:</b><br>Item Model: V83 3G Kids GPS Watch<br>Material:ABS+Solf Silicone<br>GSM Chipset:MTK 6572AW??CPU Dual Core 1.2GHz<br>GPS Chipset:MTK 6627<br> Frequency Bands:GSM 850/900/1800/1900MHz+WCDMA 2100/900MHz<br> Location Model:GPS+AGPS+LBS+WiFi<br>GPS Location Precision:5-15m<br>LBS Location Pricision:100-1000m<br>GSM/GPS Antenna: Internal<br>Battery:Built-in 600mAH polymer battery (150hrs Standby Time)<br>Screen:1.54 inch Color Touch Screen??240*240 pixels<br>Operating System: Android<br> Sim Card Slot:Single<br>Charge Model:Micor USB Interface<br>Physical Buttons: Power Buttin (SOS)<br>Color Options:Blu