Our most advanced repellent system ever, the Thermacell Rechargeable Mosquito Repellent keeps mosquitoes away, without spray. 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 80%. Rechargeable and long-lasting, the E-Series is incredibly effective and is environmentally friendly. Its effectiveness is unmatched by candles or torches. • Intelligent, Advanced Technology. Rechargeable and intuitive. One button controls the E-Series.• Scent-Free, No-Smoke, No Mess. Unlike candles or torches, our advanced repellent is scent-free, and there is no mess or smoke either. So, you can make the most of your time outside.• 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.• Repels tough mosquitoes, including those that may transmit Encephalitis, Chikungunya, West Nile Virus, and Zika Virus.• Contains: 1 Rechargeable repeller with a built-in Li-Ion rechargeable battery, one 12-hour refill repellent cartridge, and a USB charging cable Hours of Protection: 12 Weight (lb)0.8 Zone of Protection Size: 20 Feet | Thermacell Rechargeable Mosquito Repeller