Track and train your dogs with the Alpha TT 25 dog collar. It has a rugged yet slim design that fits many breeds and features a user-replaceable band. You can track and train your dogs up to 9 miles away when used with a compatible handheld. It has a multicolor LED for easy identification even in the dark. The collar has 18 levels of training stimulation, tone, and vibration. It can last up to 136 hours with the upgraded battery pack. When charging and connected to Wi-Fi, the collar will automatically install the latest software updates. Compatible with a Garmin dog tracking handheld device for tracking and training Track and send training commands up to 9 miles with updates as frequent as 2.5 seconds 18 levels of continuous or momentary stimulation, tone and vibration for dog training Universally sized with user-replaceable flex band Large multicolor LED for identifying your dog, even in the dark Up to 136 hours of battery life with the upgraded expanded battery pack when using dynamic tracking Automatic updates with Wi-Fi technology when connected to your network Batteries are user-replaceable and easy to change.