PetSafe Vibration Bark Control Collar Uses vibration to interrupt the dog's barking. Durable and waterproof. Three color LED for good/low battery and test indicators. On/off position for longer battery life. Works well with deaf, sensitive or timid dogs. Dogs typically stop barking within the first few days after wearing the collar. Easy to use, no programming required. How the PetSafe Vibration Bark Control System works: As he barks, he receives a safe but annoying vibration from one of the two vibration points. The collar offers 10 combinations of vibration correction. When the dog barks, vibration is delivered. The duration of the vibration is random, which interrupts the dogs bark. When used according to instructions, the collar safely reduces nuisance barking. Fits neck sizes 6-27 in Includes: adjustable nylon collar PetSafe® RFA-188 battery operating guide one year warranty
