Dog Whistle to Stop Barking. NEW and Improved- Convenient 2 Pack in Beautiful Gift Box- Helps with Training,Teaching Discipline and Commands - Valuable User Guide and Tips Emailed by Yogo- Adjustable, High Pitch, Lightweight Field Whistle Also Great for Hunting, Camping and Emergencies. Get your Barking Dog to stop Now! ADJUSTABLE PITCH - Since all dogs have varying hearing levels, this handy whistle has an adjustable frequency so you can adjust it perfectly for your dog. EASILY ACCESSIBLE - Comes with a keyring that easily attaches to a lanyard that you can keep around your neck so you never have to worry about losing it. LIGHTWEIGHT - Small whistle, yet very powerful training tool. You dont have to drag any heavy clumsy tools to do the job. HUMANE- Training your dog to stop barking does not have to painful for your pet. This whistle is a humane and safe deterrent to shock collars. VERSATILE- This isn't just a dog whistle, this is also a great device to keep on hand while camping, hiking or hunting. Use as a rescue whistle on the highest pitch for a very loud blast, so you can feel safe wherever you are!