Does your furry friend bark too much? An anti-bark collar helps your dog stop barking. This allows you to welcome visitors with peace of mind and enjoy a good night’s sleep. An anti-bark collar helps dogslearn to stop barking with vibrations and beeps. Anti-bark collar with 2 training modes – Sound and vibration Instructions for use: 1. Light and compact, elegant appearance and easy to use. 2. Use sound and vibration patterns to train your dog. 3. The first two triggers are only sound warnings and the thirdtimes, the sound is followed by a slight vibration. 4, 7 speed sensitivity settings, can be adjusted according to bark sound size. 5. One 4LR44 6V battery. 6. If it works for no reason, or whatever you call it,please adjust the sensitivity to an appropriate level. 7. When the power of the bark stopper is low, please replace the battery as soon as possible, otherwise the bark stopper will not work well. 8, ABS material.