The TRI-TRONICS Upland Special G3 Dog Training Collar and Beeper offer upland gamebird hunters a way to always know where their bird dogs are... and when they're on point. System is expandable to up to three dogs by purchasing extra collars and beepers. Fully waterproof and submersible, the collar and beeper are perfect for training in wet conditions with no worry of damage. The collar has a 2-1/2" integrated transmitter antenna and no exposed charging ports to gather debris and no covers to remove for charging. The collar is 1/3rd smaller and lighter and offers a better-fitting curved shape and improved collar strap guides. Features 18 levels of momentary stimulation and 6 levels of continuous stimulation at up to a 1-mile range. Smaller and ergonomically shaped, the G3 transmitter fits your hand better and is more comfortable to use and carry. The rugged, molded case is built to withstand all kinds of training and hunting conditions.