Ultrasonic Anti Barking Pet Dog Repeller Train Control Device Bark Stop Trainer Feature: What can you do when your pet dog starts barking non-stop? With the ultrasonic dog trainer,you can train your pet to be obedient Correct its misbehaviors ;stop its noisy barking The trainer is based on the theory that ultrasound (more than 20KHZ) is above the upper limit of human hearing and super ultrasonic and 2800mcd strong white light. It can activate visual and additive activation to dogs, cats and other animals, but there will be no effects on people. Specifications: Frequency: 25 KHz Sound Pressure: 130dB Max current: 130 mA Powered By: 9V battery (Battery not included) Material: Plastic Color: Yellow,Black Size: approx.13 x 4 x 2.6cm Package included: 1 x Ultrasonic Dog Repeller (Battery not included)