PRODUCT SUSTAINABILITY FEATURES:: Environmentally friendly Active ingredient: Metofluthrin Scent-free, no smoke and no mess More effective than candles or torches TECHNOLOGY & DETAILS: TURN IT ON… MOSQUITOES GONE: Our most advanced repellent system. Thermacell E55 Rechargeable Mosquito Repellent creates a 20 ft mosquito protection zone – 80% more area than previous models. Easy to use, one button keeps mosquitoes away PERFECT FOR BACKYARDS: The E55 is ideal for the backyard, poolside, patio and more. Enjoy 12 hours of continuous mosquito protection with the included scent-free refill. Stay protected even longer with a 40-hr refill (sold separately) ON-DEMAND DEFENSE: Powered by a rechargeable lithium-ion battery, E55 provides 5.5 hours of continuous mosquito protection on a charge. USB charging cable included. Allow 15 minutes for full effect. Can charge while operating to extend run time REPEL WITHOUT SPRAY OR SCENT: Repel mosquitoes without chemicals or sprays on your skin. No lotions or DEET to apply. No smoke, flames, or citronella. Not a messy trap or gimmicky sonic. Independently tested. EPA reviewed for safety & effectiveness THERMACELL GUARANTEE: Our one-touch-simple E55 carries a 2-year warranty, extended to 3 years with free, easy registration. Developed and Tested at our New England based R&D center. We stand by our products with a 100% satisfaction guarantee