The Thermacell Mosquito Repeller Trailblazer Camp Lantern effectively repels mosquitoes, black flies, and other biting insects by creating a 15 x 15-foot zone of protection for bug-free comfort. Its bright 300-lumen light runs for 50 hours on its highest setting and makes it a great addition to the serious camper's gear. Ideal for use while you are camping, hunting, and fishing, Also includes one single pack refill. Batteries not included.