The Thermacell MR300 Portable Mosquito Repeller efficiently drives away mosquitoes by establishing a protective zone of 15 feet. It's designed for outdoor use, allowing you to bring it virtually anywhere to deter annoying mosquitoes, preventing them from biting or disturbing you. The MR300 represents the latest advancement in Thermacell's line of portable mosquito repellers, offering a range of new and enhanced features. New features include: Quiet ignition, Reengineered grill and switch, Improved ergonomics, and Accessory mounting system. Ideal for repelling mosquitoes from the backyard to the great outdoors. Portable and lightweight. No spray and no mess. Scent-free and DEET-free. No open flame, no smoky candles. Package contains: 1 Black MR300 Repeller and 12 hours of refills - 3 repellent mats and 1 fuel cartridge.