... guard tour system 2,Waterproof &Durable 3,USB Communication 4,10 meters free fall without damage 5 years ... Power:3.6V lithium battery,rechargeable5,Light and buzzer to show success read, also can light and vibration ... pcs tags.Microsoftware Support Windows95 and above.Easy to set up checkpoints,patrolman,route,event,plan and ... Inventory, Asset tracking etc... Competitive rfid guard tour control system