The Sport Upland is a compact and lightweight versatile remote trainer that includes a Beeper which is designed for the bird hunter. The Sport Upland is field expandable to control up to three dogs (additional collars purchased separately). Features: 10 levels of momentary and 10 levels of continuous stimulation Transmitter remotely operates accessories including the Beeper and Tracer E-Collar Light Consistent 1/2 mile range Waterproof Transmitter and Receiver Allows easy one-hand operation without taking your eyes off your dog Stimulation dial allows quick and easy stim level changes 8 second safety cutoff on all stim levels A no-stim "N" setting to avoid accidental stimulation 1 ½ in fixed Transmitter antenna with enhanced performance eliminating lost or broken antennas Multi-Dog selection switch colors match collar strap colors to identify dogs being stimulated Compact, tough, and dependable Receiver Easy to access Receiver on/off switch Insulated contact points for reliable performance in wet conditions Interchangeable long and short contact points for different coat thicknesses Stainless steel contact points minimize neck irritation on the dog Proprietary charging system allows indefinite charging without damage and a full charge in two hours Charging Cradle eliminates need for jack or plug on Receiver Lanyard for Transmitter included Battery life indicator on Transmitter and Receiver so you know when to charge the system or replace the battery Long lasting rechargeable, user replaceable, NIMH batteries for Receiver and non-rechargeable, user replaceable 9 volt battery for Transmitter