The Alpha 300 is a dog tracking and training handheld that allows you to track and train your pack when paired with your compatible dog collars. Monitor up to 20 dogs from up to 9 miles away. See it all on a vivid 3.5 touchscreen display with up to a 2.5-second update rate. Easily control training functions by using the button-operated, dog-focused design. This handheld offers 18 levels of stim, tone or vibration when paired with your training-enabled collar. Access premium Garmin navigation features, such as preloaded TopoActive maps, satellite imagery, and a built-in 3-axis compass and barometric altimeter. With up to 55 hours of battery life, you dont have to worry about running out of power before your dogs do.