Rojeco 1000m elektrisk bark krave PD529 (Sort)Rojeco 1000m electric barking collar PD529 (Black) Rojeco PD529 is a barking collar that supports the process of dog training thanks to three safe and effective modes of operation: audible, vibration and electric pulse. With customizable intensity levels, you can precisely choose the right settings for your pet's temperament and needs. The collar is designed with safety in mind, and you won't have any problems using it. Three modes of operation for