EASY-TO-USE Simple, tube shaped handheld, makes it easy to hold and operate with one hand so you can keep your eyes on the dog(s) at all times MULTI-DOG Ability to train multiple dogs at once, with purchase of additional dog devices (PRO 70 = up to 6 dogs; PRO Trashbreaker = up to 9 dogs; PRO 550 = up to 3 dogs) RANGE / FREQUENCY - 4 mile range with MURS frequency for PRO Trashbreaker - BEACON LIGHTS Remote control of LED beacon lights on the dog device for low light conditions; visible up to 100 yards away BARKLIMITER Built-in BarkLimiter with Advanced Bark Correction Technology PRO Trashbreaker handheld, dog device w/ antenna and keeper, 3/4” black collar strap, AC adapter, split adapter cable, charging clip, contact point set w/ wrench, manual