Ultrasound and vibration collar with transmitter. It is one of the best anti-barking collars working on the market of ultrasound and vibration. Greatly shaped device with perfetcly fits on the dogs neck. It can be used for communication with partialy deaf dog - vibration + ultrasound can be turned on in distance of 22 meters. BarkiWise is product of american company GoodLife specializing on ultrasound devices. It is top class device. It is one of the best anti-barking collars working on the market of ultrasound and vibration. Greatly shaped device with perfetcly fits on the dogs neck. It can be used for communication with partialy deaf dog - vibration + ultrasound can be turned on in distance of 22 meters. Correction type Barkwise has an option to use as a correction sound warning vibration and ultrasound. Ultrasound can be used in combination with sound. It is suitable for partialy deaf dogs Range By the remote control you can turn on its function ultrasound sound and vibration to the distance of 22 meters. Battery and charging. One charge will last from 12 to 24 hours. Collar lenght BarkWise has very strong and quality collar made of plastic. Its lenght is adjustable from 20 to 65cm.