Garmin Alpha 200i Handheld Dog Tracking GPS - The Alpha 200i is an incredible device. The system is designed to help make tracking simple, accessible, and fast. You are able to monitor up to 20 dogs from up to 9 miles with a 2.5 second update rate. To better manage each dog, you can create dog lists to manage active groups, making it so you don’t need to remove dogs for every hunt. Dogs go where they want to, so the optional public land boundary map helps you know where you are, or supposed to be. The Alpha has 18 levels of stimulation allowing you to customize training for each dog, also allowing you to issue different levels of audible tone or vibration. The Garmin Alpha 200i allows your hunts to be successful, and efficient. Display Resolution: 282 x 470 Pixels Display Type: Transflective Touchscreen Battery Type: Rechargeable Lithium-Ion (Included) Weight: 9.9oz 16 GB Of Memory TopoActive Preloaded Map Can Add Maps Sun And Moon Inforomation Compatible With: T5/T5 Mini TT15/TT15 Mini T5X TT15X