This Portable Solar Ultrasonic Mosquito Repellent is compact, light weight and portable, can be hooked on your clothing, or bag.
No need power charging or battery and powered by solar energy. Just put the device facing the sun, turn on the switch, and it will help to repel the annoying mosquitoes and insects.
Sound wave frequency: 5000Hz-9000Hz, working power: 0.01W, effective area: 6 feet.
Note: Please put Portable Solar Ultrasonic Mosquito Repellent in the sun for a few hours before using it for the first time.