The PT 10 is the perfect option for the multi-use of training and hunting with your best friend. It is compatible with the Pro 550 and a handful of other systems from Garmin. The PT 10 is tough, water-resistant, and is designed to withstand all the blows, bumps and sloppy conditions of training and hunting. This dog device also features a long-lasting, rechargeable lithium-ion battery you won't need to worry about when you are in the field!