Approved bythe scientific research: only the pregnant female Mosquitoes can bite the people.During this period, the pregnant female mosquitoes will try theirbest to get rid of the male mosquitoes. Moreover, there is anatural enemy for mosquitoes------dragonfly. According to thisbasis theory of biology and bionics, this product can give outtwo kinds of imitation sounds: wings vibration sounds of malemosquitoes and dragonflies.these two sounds can repel manykinds of mosquitoes.

B. Usage andCoverage:

This product canrepel many kinds of mosquitoes. It can be used indoors also outdoors, such asbusiness trip, traveling, camping,fishing and mountain-climbingetc.

The effectivearea can cover around 9 sqm.

C. OperationMethods:

1.Install 3 pcsof AAA dry batteries or rechargeable batteries (not included)according to thecorrect directions.

2.Put the switchon the right side into middle or top position when the red LED will be on whichindicates the product is working.

3.The middleposition of the switch is wings vibration sounds of the dragonfly and the topposition of the switch is the male mosquito. These two positions are optional bythe users.

D.Cautions:

   1.Thebatteries should be replaced when the red LED dimmer.

   2.It shouldkeep away from water and moisture.

   3.No any harmto the human-body, pets, home appliances and environments.

   4.Thereshould be no any obstructions between the product and human-body.

E. TechnicalSpecifications:

1.Valtage andCurrent: 4.5V/5mA

2.PowerConsumption: less than 1W

3.Centrefrequency: 16Hz/4.5KHz