one in ten dogs not works

the button is silent .

super play low

Ultrasonic Sound Control
Meme about maxing volume, featuring Bluetooth icons, speakers, Apple and Android logos, a barking dog, frustrated people, a play button and a car accident background with text "I didn't click."

Connect your smartphone to your car radio via Bluetooth. Turn the volume to the maximum and press Play to emit the ultrasonic sound that scares 9 out of 10 dogs, reducing the risk of an accident