When your pack disappears into the distance while tracking your latest target, the Garmin Alpha TT25 Dog Tracking and Training Collar lets you know exactly where your dog is. The replaceable flex band collar and the tracker's slim yet tough housing fit comfortably on a wide range of dog breeds. When used with a compatible Garmin handheld (not included), the Alpha TT25 Dog Tracking Collar tracks out to 9 miles. A built-in, multicolor LED display helps you identify your specific dog in low-light conditions. A great choice for dog training, the TT25 comes equipped with 18 levels of momentary and continuous stimulation. It also has tone and vibration to add to your dog training sessions. 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. Know exactly where your dog is! Tracks out to 9 miles Up 68 hours of performance Multicolor LED display 18 levels of momentary and continuous stimulation Tone and vibration signals Flex collar fits comfortably Connects to Wi-Fi for software updates