Thermacells award-winning technology keeps mosquitoes away by creating a 20 Ft. protection zone around you. The proprietary formula precisely targets mosquito sensors, driving them away. With consistent protection that doesn't weaken over time, Thermacell helps you live your best outside life without the use of bug sprays or lotions on your skin. Features a 9-hour rechargeable battery. Provides ambient dimmable light from 50 to 200 lumens. Permitted on airplanes. 12 hours of mosquito repellent included. 2-year warranty.