Hands-free, silent, portable, and odorless protection against mosquitoes Great for hunting, fishing, barbecues, and many other outdoor activities Covers up to a 15' diameter Also repels black flies, no-see-ums, and sand flies Cordless and portable - carry it with you New more ergonomic design - matte finish and quieter on/off button 50 times more of the same chemical repellents in mosquito coils DEET-free - uses allethrin US Army tested and approved Repel mosquitoes, black flies, no-see-ums, and sand flies while out enjoying the outdoors with the ThermaCell Mosquito Repellent system. Powered by a butane cartridge (included), this convenient unit heats a small mat containing the synthetic repellent allethrin to create an area of invisible, odorless protection. Containing 50 times more of the same chemical repellents found in mosquito coils, this unit gives you an area of protection that extends out to 15' in diameter. Cordless and portable, the ThermaCell unit features a more ergonomically designed casing than previous models, with a narrower grip for easier use and quieter on/off button. Low glare matte finish. Lightweight 7.1 oz. with full butane cartridge. Unit protects up to four hours per mat (Heats mats up to 12 hours per butane cartridge). US Army tested and approved. Color: Realtree APG™.