LED Ultrasonic Double Head Pet Driver Aiding

Material: ABS Size: 14x 6x 3 cm Please 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.