PENSON & CO. Dog Training Collar Wireless Rechargeable LCD Remote Digital Shock Bark Waterproof 900 Feet Range (Newest Model Training Collar) Please note: Collar is rechargeable using the provided charger. The receiver operates using 3 AAA batteries. Works for dogs from 10 up to 85lbs; Comfortable dog collar. Safe and humane training; Conveniently designed allows you to operate device with only one hand 900-foot range; Water resistant Transmitter and collar fully Four Different Training Modes Include LED Light, Sound, Vibration and Shock Static; Strong, effective training that really works Operates with 3 AAA batteries included in your kit; Controls "bad behavior" and embarrassing disobedience