LED Ultrasonic Double Head Pet Driver Aiding

Material: ABSSize: 14x 6x 3 cmPlease pay attention: Not Include Battery(9V Battery)Usage:1.train:switch to choose "I" gear,press the "No" button emit ultrasonic,to train dog.2.chaser:choose "II" switch gear,press the "No" button emit ultrasonic,dogs afraid to close to you.3.light:choose "light" switch gear,can be used as a flashlight.