Features: Portable The anti-barking chaser is only 5.31*1.97*0.98inch(L*W*H), which is compact and lightweight. Besides it owns a carrying strip on the tail, which is convenient to carry out. Super ultrasonic The anti-barking chaser make full use of the ultrasonic wave to stimulate dog’s ear wit up to 130db wave. It can effectively protect your from dog’s attacking. LED light The anti-barking chaser is designed with super light LED light to let the dog know the ultrasonic wave original position and drive them away from you as soon as possible. You also can used the LED light as torch in dark situation. 3 modes The anti-barking chaser owns three modes, including chaser mode, train mode and light mode to suffice different situation needs. Scope of application The anti-barking chaser is suitable for training dog, drive braking dog, lighting up your view and so on. Usage: Do not aim the anti-barking chaser to human ear. The chaser mode will use much electric power. When the battery current is too low, the ultrasonic wave will has smaller power. So please do not press the switch of chaser mode for long time. 3-5 seconds is suitable. The anti-barking chaser may be not useful for your own dog, dog with the host. Specification: Type: anti-barking chaser Quantity: 1pc Material: plastic + electric component Color: black Battery: 1pc 9v 6F22 battery ( not included ) Size: 13.5*5*2.5cm/5.31*1.97*0.98inch(L*W*H) Net weight: 58g/ 2.05oz Package: 1* anti-barking chaser