Garmin Tri-Tronics PT10 Add-On Dog Collar for PRO 70/PRO 550 -PT 10 features a built-in BarkLimiter, activated by the dog device. BarkLimiter features Autorise technology, which automatically adjusts correction to the optimum level needed to stop unwanted barking. The PT 10 dog device collar is designed to withstand all the blows, bumps and sloppy conditions of training and hunting, and comes with 2 lengths of removable, stainless, insulated contact points for reliable performance in wet conditions and extended comfort for the dog. The dog device is water rated to 10 meters, and features a long-lasting, rechargeable, lithium-ion battery. A battery life indicator on the dog device lets you know when to recharge the system. Train up to 6 dogs on 1 PRO 70 handheld, or up to 3 dogs on 1 PRO 550 handheld1 mile rangeBuilt-in BarkLimiterRemote operation of beacon lights on dog deviceInterchangeable contact pointsRechargeable lithium-ion battery included60 hour battery lifeNon-floatableBeacon lightsPRO 550 Vibration onlyPRO 550 Accessory unit activation onlyBarklimiter modeTone feature