I'm selling this item because I only tried it once and no longer use it. The power works fine, and it's usable. I'm also including the instruction manual, although it's torn. Remote-controlled training device for dogs to prevent excessive barking, with a compact and easy-to-use design. Suitable for small to large dogs. - Brand: Wodendog - Included items: Remote control, instruction manual, charging cable - Function: Remote-controlled training device to prevent excessive barking - Design: Compact and easy-to-carry design - Color: Black Thank you for looking.