Product details:

No matter what kind of dogs you run or how you hunt, is the slim, rugged and universally sized collar designed to help you build a better dog ?? no matter the breed. Track your dog up to 14.5 kilometers when used with a compatible handheld (sold separately). Optimise your battery life with dynamic tracking. Collar is universally sized to fit large and small breeds. Easily change the user-replaceable flex band. Train with stim, tone or vibe when used with a compatible handheld (sold separately). Get automatic software updates when charging and connected to your network with Wi-Fi technology.