ThermaCELL Rechargeable Mosquito Repeller. Within minutes the system heats and activates our scent-free invisible repellent protecting outdoor spaces from mosquitoes. The E-Series been evaluated by the EPA for safety and effectiveness and provides a 20-foot Zone of Protection against mosquitoes - our biggest zone size ever by 80percent. Rechargeable and long-lasting. Intelligent Advanced Technology. Rechargeable and intuitive. One button controls the E-Series. Scent-Free No-Smoke No Mess. Long Lasting Refills keep you protected - A single long-lasting refill cartridge (up to 40 hours available) can last the entire season (12 hours included). Charge Indicator Lets you know how much run time is left. 5.5+ hours per charge. Contains: 1 Rechargeable repeller with a built-in Li-Ion rechargeable battery one 12-hour refill repellent cartridge and a USB charging cable. Specifications for ThermaCELL Rechargeable Mosquito Repeller: Manufacturer: ThermaCELL Additional Features: Yes Weight: 1 oz Battery Type: Lithium Ion Width: 6.2 in Length: 9 ft Height: 3.2 in Package Contents: ThermaCELL Rechargeable Mosquito Repeller