A miniature sonic wave generator is installed
to the bottom side of the curve shape hat
brim.
This sonic wave imitates the wing
speed of male mosquito to repel the
pregnancy female mosquito who is the only one bite.
The hat front brim is not only used as a sun shape purpose but also acts like a
directive antenna reflector to beam the sonic wave downward. The reflected
sonic energy will form a divergent beam with 60 degree beam width shooting downward from the hat brim, and such a beam width is quite capable to give an excellent protection to cover the whole body from face to toe, however, is an
open area expose from the mosquito attack.
A flashing LED is power indicator as well as a low battery indicator, when the
LED light turns dim, the battery should be replaced. This unit is powered by one button cell CR2016, and the ultrasonic wave is safe for human body.