When your hunting buddy runs off and disappears into the distance, the Garmin Alpha T20 Dog Tracking Collar will let you know exactly where your dog is. The flex band collar and the tracker's slim yet tough housing fits comfortably on a wide range of breeds. When used with a compatible Garmin handheld, the Alpha T20 Dog Tracking Collar tracks out to 9 miles. A built-in, multicolor LED display helps you identify your specific dog in low-light conditions. The built-in, rechargeable battery delivers up to 68 hours of performance, or upgrade to an expanded battery pack (not included) for up to 136 continuous hours. Unit connects to Wi-Fi network to automatically install software updates.