Attractive features:3g micro sim supported1.54inch with 240*240 resolution colorful screen2.5D smooth quality touch panel Rotating camera(2MP) two-way calls multiple positioning(GPS+WIFI+AGPS+LBS) electronic fence a key SOS curriculum voice chat multiple alarm clock(Analog clock face/12hour/24hour system optional	 remote monitoring.</br>GSM 850/900/1800/1900MHz+WCDMA 850/1900MHz. Support MicroSIM only the size is 12*15 mmdo not compatible with SIM and Nano SIM support 2G and 3Gwe recommend AT&T sim.( NOT support for VerizonSprint CDMA sim). the watch support GSM sim with 2G GPRS date and support SIM with 3Gif you must buy some newest version 4G LTE simplease check with Carrier if supported with GSM850/900/1800/1900Mhz and WCDMA 850/1900MHz</br>Multi-Features: watch with SIM card to support parents and children two-way callsGPS Tracker Location with App Smartphones +Achieve all day real-time location tracing check the position at anytime anywhereFitness Tracker for child: PedometerVoice Chat on appAlarm Warning of taken off etc.</br>Kids Smart Watch Phone is best gift for your children??blue/pink two optional?? favorable color for girls boys.comfortable feeling with good qu