1 1/2 Mile Range Tone Button Waterproof and submersible to 25 ft., per NEMA 6P and IP67 standards Receiver and Transmitter use replaceable, rechargeable NiMH batteries (included) Expands to 6 dogs Low Battery Detect Feature in both Remote Transmitter and Collar Receiver 30 Levels Continuous Stimulation 20 Levels Momentary (Nick) Stimulation Lifetime Limited Warranty

With a high-output receiver and 30 levels of correction to choose from, the 2500 is effective when working with virtually any sporting breed and temperament. Its excellent performance at distances up to 1 1/2 miles also makes it a great system for hounds, beagles and big running pointers. SportDOG Brand®. Gear the way you'd design it™.