Backpacker Mosquito Repeller is easy to use and provides hours of scent-free, mess-free mosquito defense up to 15 feet. With no batteries or cords needed, it utilizes the same camping gas canisters (not included) that backpackers and campers likely have in their bag already. It has a lightweight design (114g/4.0 oz) and compact size (97mm H x 50mm W x 67mm L) and provides dependable performance up to an elevation of 7,000 feet. It is fuel efficient with up to 90 hours of run time on a 4 oz. canister and up to 360 hours on a 16 oz. canister. It is only compatible with valves designed to the EN417 specification.