The PRO 550 handheld has a top-mounted selection dial for Vibration and Stimulation Levels (1-7) with a green button that operates Tone and any compatible accessories. The PRO 550 handheld allows switching between 3 dogs (black. red or blue) and selecting stimulation type ('M' and 'C' selects stimulation type and 'A' is for Accessory). The PT 10 blue dog collar device has long and short stainless steel contact points for reliable performance in wet conditions. It has a built-in BarkLimiter with Advanced Bark Correction Technology. The PT 10 dog device has a 60 hour battery life and is compatible with 0.75 Inch (1.9 cm) collars. It works at a range of 1 mile from the PRO 550 handheld. The bundle includes the PRO 550 handheld. PT 10 blue dog collar device. AC adapters. charging clips. contact point sets with wrench. manuals. -
