MINI USB-GT120 Kids & Students / Luggage/key/bag /the disabled / Cars Tracking GSM 4 Bands (850/900/1800/1900Mhz ) Size:50�?30�?15mm Net weight : 28g Gross weight: 150g Geo-fence,History Route Real-time tracking Remote Monitoring Rechargeable Build-in 3.7V 500mAh Li-ion battery Standby 120 hours Remote tracking by cell phone or Software Platform Auto position report to cell phone or platform. Reply sms with google position link to cell phone Vibration/Displacement/Low battery /Overspeed alert Sleeping power-save mode Blind area tracking Waterproof IP65