SportDOG SportHunter 825X Remote Dog Training Collar, 1/2 mile Range

Provides up to 1/2 mile of range for a long reach Offers 21 levels of static stimulation and the option to train with vibration and tone Expandable to 3 dogs with purchase of additional Add-A-Dog collars (SDR-AF) Waterproof design is submersible up to 25 ft. using DryTek technology Rechargeable lithium-ion batteries for convenience Ideal for dogs 8 lbs. or larger with neck sizes 5 in. to 22 in. Dog trainer is designed for ease-of-use and no look operation