... ,000 records Influence distance: 3cm to 6cm Battery lifespan: 200,000 chargi Wireless Guard Tour Patrol System ... with 30,000 Records Capacity and Super-Long LifespanModel name: GS6000EKey Specifications/Special Features:Card: ... 30,000 records Influence distance: 3cm to 6cm Battery lifespan: 200,000 charging times Power supply: replaceable 3 ... 30,000 Records Capacity and Super-Long Lifespan