This anti-bark collar stops barking with progressively increasing sound and Vibration which are controlled by a microprocessor distinguishing your dog's bark from other environmental noises and automatically delivers sound and Vibration after each bark, most of the pets will quickly understand the new sensation is telling them to be quiet. It can be adjusted to control the sensitivity of the voice, according to the size of dogs barking.

• 5 sensitivity levels: whether you are training your new dog or just need a break from nighttime barking, our collar features 5 sensitivity levels that activate only when your dog barking.
• Safe and effective: the anti-bark collar sends harmless warning Vibration, progressing through the 5 sensitivity levels. For your dog's protection, it will stop working for 1 minute if your dog continues to bark.
• Easy to use: simply slip it around your dog's neck and the system is ready to go.
• Adjustable nylon collar: easy to adjust the collar length. The adjustable extent is from 6.69 inch to 19.68 inch.

How it works:

1. At the first bark, the collar will send out a short warning tone. If a second bark occurs within thirty seconds, a more intense tone is sounded. From the third bark, a more intense tone is sounded along with a short, mild Vibration. This pattern is repeated through 7 conduction levels.
2. If your dog continues to bark, the more intense sound will send out until your dog stops for thirty seconds, and then it will automatically reset to the first " tone only " level. If the collar reaches the 5 level, the collar will stop working for 1 minute to protect your dog.
3. The dog will enhance the memory every time the Vibration intensifies, and will quickly understand the Vibration as a punishment because of its barking. There will be very good effect after something training.

Package Contents: 1 x Anti-bark Receiver 1 x Adjustable Nylon Collar 1 x Test Light 1 x English User Manual

Note: This product has no electric shock