Garmin Pro 70 Dog Training System MULTI-DOG - Ability to train multiple dogs at once, with purchase of additional dog devices (PRO 70 = up to 6 dogs) RANGE / FREQUENCY 1 mile range with 27MHz radio frequency for PRO 70 BEACON LIGHTS Remote control of LED beacon lights on the dog device for low light conditions; visible up to 100 yards away. Battery life: 80 hours BARKLIMITER Built-in BarkLimiter with Advanced Bark Correction Technology. Ability to float. Dog Device : Battery life - 60 hours STIMULATION LEVELS 6 levels of continuous stimulation for PRO 70; easily control the stimulation levels by using the top-mounted selection dial on the handheld Includes - PRO 70 handheld, dog device, 3/4 black collar strap, AC adapter, split adapter cable, charging clip, contact point set w/ wrench, manual Classic, rugged design Train with stimulation and tone Built-in Bark Limiter Tough, water-resistant, long-lasting 1-hand training and control