Review on Rechargeable Dog Bark Collar: Humane, No Pain Barking Control Device for Small, Medium & Large Dogs (B) by Jeremy Jackz

This collar has good construction and structure. It's easy to charge and set up. I find the isolation on the sensitivity levels is good enough that it doesn't activate accidentally. This thing only activated once when another dog barked and played with ours, so keep that in mind. The downside of the low sensitivity is that it doesn't seem to work with our dog's barking at lower sensitivity, so you'll need to adjust it to suit your dog. Vibrations on low and high settings are quite loud and strong, so they can startle a small dog. Also, the beep is quite loud, so loud it startled us and the dog the first time. Overall this is a good product and very effective for teaching your dog not to bark.