An e-collar designed for the serious upland hunter. It is an easy-to-use, ergonomic transmitter that uses low to high power and has an extensive range of 1 mile . It has a rheostat intensity dial that allows for gradual adjustment in stimulation intensity 0-127 levels that can be set to a desired level depending on the owner's preference of training and have Nick and Constant stimulation. It also has a blue LCD screen that displays the exact numeric level of stimulation clearly and accurately and has three beeper modes – run/point, point, and locate with an audible 400 yards range with a beeper volume control. Both collar and transmitter are fully waterproof and has a tri-color LED battery life indicator to determine the how much battery power is left. This unit comes with a rechargeable 2-hour rapid charge Lithium Polymer battery and has a one-charger system to charge the transmitter & receiver at the same time. This unit is specifically designed for training medium to large dogs that weighs 20 lbs or more. It also comes with a two-dog system which is the 2502T&B. Can train up to one dog.