The Thermacell Repellents E55B, a part of the E-Series, is a rechargeable mosquito repellent that provides a hassle-free, scent-less solution to keep mosquitoes away from your outdoor spaces. Unlike traditional sprays, it operates by heating and activating an invisible, scent-free repellent within a span of mere minutes. Protection with the repeller spans a distance of 20ft, making it a versatile choice for dealing with mosquitoes in any outdoor environment. Its hassle-free nature gets rid of common issues such as smoke or mess produced from burning repellents. With a charging duration of 5.50+ hours, the repellent ensures you a relaxed outdoor experience by ensuring long-lasting protection. The convenient charge indicator feature allows you to stay aware of the remaining run time. Each device comes complete with a 12-hour refill repellent cartridge and a USB charging cable for your convenience.