TheNo-Bark Rechargeable Collarby Innotek is two collars in one. Unlike basic bark control collars that only provide negative correction, this collar also lowers the correction levels as your dog learns not to bark. The No-Bark Rechargeable Collar has Auto-set features that make this collar easy to use, with no external controls or settings. The receiver is rugged and 100% waterproof, so it can be used indoors or out and on any dog. The No-Bark Rechargeable Collar is part of the new generation of bark-control products that requires no external vibration sensor - all working parts are housed inside the rugged case.Helps your dog teach himself to remain quietActivated only by your dog's barkAuto-set features makes this collar easy to use, with no external controls or settingsWater resistantPowered by a rechargeable 6-volt battery (included)System Includes:Micro-sized, lightweight receiverEasy to adjust nylon collarShort and long probe contacts, for varying coat lengthsBattery rechargerFre