... ,Positioning,monitoring,safety protection and SOS mini personal trackerApplication l Positioning,monitoring,safety protection and SOS fuction ... on/off button,SOS button,4 phone buttonsUSB interfaceMini USB(12PIN),charging/earphone interfaceSIM card holderBuilt-in SIM card ... 7V rechargeable 800 mAh Li-ion battery,5V charging inputEarphone12PIN USB interface with MIC (optional)Standby timeUp to 72 hours ...