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.Manufacturer model #: SD-825x. SportHunter dog training collar with 1/2 range and great versatility Smallest collar in the SportHunter line Correct with tone, vibration, or one of the 21 static stimulation levels Expands to 3 dogs with Add-On collars (not included) Easy-to-use collar design DryTek waterproof design - submersible to 25' Rechargeable lithium-ion battery in collar