2502 T&B two-dog system is the next generation of compact training & beeper collars, designed for the serious upland hunter. It features a low to high power output, 1-mile range, and 2-hour rapid charge rechargeable Lithium Polymer batteries. Dogtra's 2502 T&B's beeper horn is built into the receiver and eliminates the bulky horn that sits on top of your dog's head like other beeper units. The transmitter has an LCD screen to display the exact level of stimulation and the battery life. The 2502 T&B has three beeper-modes that includes locate, Run/Point, and a Point mode.