This collar is a highly advanced solution to your barking dog problem. It is one of the most effective anti bark collars on the market. Quick and easy to fit and totally humane when used this latest version of the shock collar uses a gradually increasing shock and noise system to teach your dog to stop barking in a fast， effective and humane way. It will cure even the most awkward of barking dogs with a minimum amount of fuss. Size: Normal Features* Modes:beeper and static shock* Blowing test function* Humane uses painless tone followed by shock only if barking persists* Patented design with small and fine of meniscus shape. * Easy and convenient to test the functionality and sensitivity by blowing. * Infinite sensitivity adjustable by gear to suit for different dogs. * 2 training modes: beeper and static shock. * 7 different combinations of beeper and static shock to train dogs effectively. * The collar turns into 1-minute-automatic protection mode after 7 times consecutive working (pause time must be less than 30s). * Adjustable leather leash from 6" to 30" to suit for different dogs: small， medium and large (not for huge). Package included* 1x No bark collar* 1x TPU collar* 1x Test Light* 4x Metal Probes* 1x 4LR44 6V Battery* 1x English Manual