Mosquitoes ruin everything. Thermacell's award-winning technology keeps mosquitoes away by creating a 20FT protection zone around you. Our 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. Durable and compact with an easy-to-grip rubber over-mold, the EX90 features an IP54 rating to protect against dirt and moisture. Allowed to bring on Airplanes. 12 hours of mosquito repellent included.