Petsafe Bark Collar - shock training correction

This easy to use bark collar requires no programming and includes progressive correction. What does this mean? If your dog continues to bark, the static correction automatically increases to the next level.
It also features an automatic safety shut-off which eliminates the risk of over correction. The receiver is designed for very active dogs and it even works well when wet. The exclusive perfect bark technology ensures consistent and effective training by detecting both sound and vibration from your dog. Features 6 levels of correction that adjust automatically
Uses a vibration sensor to detect barking No programming is needed Perfect Bark technology eliminates false correction that can occur with other no-bark systems Adjustable dog collar that fits neck sizes from small-16/17 inches