Garmin's Delta XC/Delta Sport XC Dog Device can be paired with 2 other devices, allowing you to train three dogs at the same time. It features an IPX7 waterproof rating, and offers tone, vibration and stimulation modes, and includes long and short interchangeable contact points for all dog breeds and all coat lengths. Package includes 1 compact dog device with a long-lasting rechargeable lithium-ion battery plus a blue 3/4-inch collar strap. Also includes a built-in BarkLimiter.