E-collar that features 1 mile (1760 yards) range and can be used to train 3 dogs with the same Remote Transmitter with purchase of additional Add-A-Dog Collars (SDR-AB); included Beeper is audible up to 500 yards and features 9 selectable tones in silent, 5-second, and 10-second run modes The Remote Transmitter's dial allows you to instantly select one of the 7 levels of static stimulation in low, medium, or high ranges while the buttons allow you to deliver your choice of momentary (nick) or continuous stimulation. You also have the option to train with vibration (buzz) and tone (beep) This system features our DryTek technology making it waterproof and submersible to 25 feet; Collar Receiver fits dogs 8 pounds or larger with neck sizes 5"" - 22"" Rechargeable lithium-ion batteries charge in 2 hours and last 40-60 hours per charge; The Remote Transmitter, Collar Receiver, and Beeper feature a low battery indicator Remote Transmitter button functions can be customized; Detailed operating guide, training DVD, and a locally based Customer Care Center, reachable at 844-209-4636, provide support when you need it By designing our products in the field, with heat, cold, rain, snow, dust, mud, and wind in mind, SportDOG Brand has become one of the most recognized brands in the electronic tracking and training categories, making the promise to create ""Gear The Way You'd Design It"""