USB rechargeable anti-bark collar. Features a mesh strap and volume control button. - Type: Anti-bark collar - Buttons: M, Volume control button - Charging: USB rechargeable - Design: Mesh strap The charging cable that was used is also included! For small to medium-sized dogs. Use it like a collar. Using this, my dog stopped barking (Dachshund, Poodle Mix). There are no instructions, but it's easy to understand because there are only three buttons. When the dog barks, a sound or vibration is emitted, causing it to stop barking. Added photo 4: This is the part that touches the throat. You can feel the vibration from here.