After spending an hour chasing your dog in the park, you've probably realized it's time for a little training. With the Hear Now Talk & Train Pet Collar, you won't have to sacrifice all your free time going to training school. The 2-way system lets you train and talk to your pet even when it's not in sight. A waterproof collar unit comes with LED lights for nighttime visibility and is waterproof to 12 inches. With a signal range of up to 2 miles and the ability to listen in on your pet, you'll be able to keep track of him/her wherever they are. The Hear Now collar is powered by included rechargeable batteries. If your dog ever gets lost, you won't have to worry - the 'call owner' button on the collar lets the finder notify you when he/she is found. The Hear Now Talk & Train Pet Collar requires the use of the Hear Now Talk & Train Pet Controller (Sold Separately) to communicate with pet.