This buffalo horn whistle is a great help when teaching your dog to obey commands. It has two different whistles; a constant whistle tone & a trill whistle. Use these variations to teach your dog different commands for example use the trill to make your dog lie down & the constant whistle to make it sit. Vary how many times you blow the whistle to increase the commands your dog reacts to. The possibilities are endless. The buffalo horn whistle is also effective over long distances & is perfect when out hunting since it does not reflect the light or make any distracting ambient noises. It comes with a leather strap so you can hang it round your neck. Please remember that a gentle whistle is very effective & that you might surprise & upset your dog if the whistle is too loud.