The Transforming Technologies 6500 Neutralizer AC Battery Operated Ionizing Air Gun is a rechargeable light-weight durable and dependable air ionizing gun that has an ergonomic design with replaceable air filter and emitter pin. This trouble free gun incorporates the efficiency and power of an air amplifier with the proven technology of corona ionization to produce highly effective static elimination. The Transforming Technologies 6500 Neutralizer AC Battery Operated Ionizing Air Gun requires a small amount of maintenance (please note that since each application and environment in which static control is required is different. It’s difficult to state accurately how often cleaning or maintenance is needed). The air filter and emitter pin are replaceable on this unit and are both recommended to be replaced every three months or sooner depending on the amount of use.