The Dogtra 1902S is the 2-dog version of a proven workhorse with easy to use 2-dog controls that make for an intuitive user experience.75 The 1902S features a 3/4-mile range that allows you to cover more distance when training demands it and 2-hour rapid charge batteries to get you up and running in the shortest amount of time possible. The set is fully waterproof and the LCD on the handheld transmitter displays the battery life and stimulation level. The 1902S is a high powered unit and includes a non-stimulating High Performance Pager.75 The 1902S is also available in the 1-dog system 1900S.Features:Slim design receiver/collar ergonomically shaped to your dog's neckCheckered grips on the handheld transmitterNon-Stimulating High Performance PagerWater Excelling Enhanced Contact PointsRheostat/volume style with stimulation levels 0~1273/4 - mile range‘Nick’ and ‘Constant’ stimulationLow/High StimulationFully waterproofLCD screenBelt clip2-hour rapid charge batteries Includes: TransmitterReceiver (5/8"contact points, which are standard)Battery charger and splitter cableTest lightOwner's manualGear BagBlack lanyardBelt clip