Approximately 17cm tall, 13cm wide. Uses 4 AA batteries. Operation confirmed. This item was at home, and it's compact, so it doesn't take up much space. I cut out the instructions written on the box and kept it in the cupboard, but I never used it, so I'm selling it. The string came off when I took out the batteries, but there's no problem. As you can see in the fifth photo, there's glue? visible on the back, but it seems to have been there from the beginning. Batteries are not included, but I will include the cut-out instructions.