SPORTDOG SPORTHUNTER X-Series 825X 1/2 Mile Range 21 Levels
Other FEATURES:: 1/2 Mile Range, 21 INSTANTLY SELECTABLE Static Stimulation Levels, Low/Medium STIM Ranges , Tone & Vibration OPTIONS, Rechargeable L-Ion Batteries Other FEATURES2:: EXPANDS To 3 DOGS With Add-A- Collar System, Waterproof, Intuitive, No Look Operation LETS You Stay Focused On Your Dog,