Keep your family protected from those annoying mosquitos with the easy to use and chemical free portable mosquito guardtm from sunbeam. This device uses hi-tech sound technology to ward off those pesky insects. This means there are no poisons, no insecticides and no traps around your family and pets. Sunbeams portable mosquito guard emits constantly-changing high frequency ultrasonic and sonic sounds that are virtually undetectable to humans, but drive moisquitos mad. Triple speakers provide optimum coverage and protection. Adjustable volume allows you to control the level of protection. Battery powered for complete portability. 4-Aaa batteries (included). Also can be powered by 6v dc adaptor. Includes hanging hook so you can hang it right where you need it indoors or outdoors. 2 Year limited warranty.