Petsafe Hbc11-11050 Bark Control Collar, Vibratin Sensor
Highlights:Automatically adjusts to your dog's temperament starting at lowest level6 levels of static correction, progressive correction feature increases correction to next strongest levelUses vibration sensor to sense for barking, sensor probe cannot be removed or adjustedMust fit properly, cannot attach leash to collarDog should be at least 8 lbsOne center black plastic sensor probeManual and video included