1,RFID tag,rfid wristband tag,active tag,long range read, 2,Especially in human ... , 3,Nice colour 4,Can reach 80M RFID tag,rfid wristband tag,active tag,long range readPerformance: l MR3850A is a ... -proofWeight20gBatteryBuilt-in button ceil,2 years life time RFID Active Wristband Tag