The introductory e-collar to the long-range SportHunter family, the SportHunter 825X Electronic Dog Training Collar from SportDOG Brand offers long range training for up to 3 dogs. Featuring the smallest SportHunter collar available, this system reaches out up to a 1/2 mile to train your dog with tone, vibration, or one of the 21 levels of static stimulation. Expandable to 3 dogs (with additional Add-A-Dog collars, not included), this collar system features a remote designed to be operated without having to look at it. Deliver needed stimulation with just a slight movement of the dial and the push of a button. Waterproof collar design is submersible to 25 thanks to DryTek technology. Collar features rechargeable lithium-ion battery. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Training Collars.