Mosquito protection at the push of a button. The easy-to-use Thermacell Radius Zone Mosquito Repellent is rechargeable, scent-free, compact, powerful, and operates with a single refill component. Powered by a Lithium-Ion battery (rather than fuel), Radius creates a 110 square foot mosquito protection zone. Radius is also air travel friendly, consistently operates at any elevation, and was voted Best Camping Gear of 2018 by Outside Magazine!