The 2300NCP Advance with LCD screen is a true multipurpose e-collar for mild mannered or stubborn dogs. It's designed for advanced level pet training, competition field work or any type of hunting where a 3/4-mile range is needed. 2-hour rapid charge Lithium Polymer battery. Low to high power. Rheostat dial allows for gradual increases in stimulation intensity with no jumps between levels (0-127). Two-dog models allow the trainer to control two different dogs from one transmitter without the hassle of handling unnecessary parts. dogtra 2300NCP Advance Series has a 3/4-mile range. Stimulation type- Nick , Constant and non stimulating pager/vibration. Dogtra 2300NCP Advance Series uses a new Lithium Polymer battery that provides a 2-hour rapid charge. Fully Waterproof collar/receiver and transmitter.