Batteries are not included. After inserting batteries, it functioned like a microphone. The metal part of the battery cover has some damage. The box already has a lot of damage, so it will be shipped wrapped in a paper bag or plastic bag. (If I can get a cardboard box of the right size, I will pack it in a cardboard box.) I plan to ship via Mercari delivery, which offers compensation in case of any issues. As it is precision equipment, I will take a video during packing, including a function check, in case something happens. Shipping will be via Rakuraku Mercari Delivery or Yu-Yu Mercari Delivery. This is a handheld karaoke device with volume control. - Brand: MUSICMATE - Model Name: Handy Karaoke - Included Items: Box, Instruction Manual - Functions: Volume control button, power switch - Design: Handheld, with microphone Thank you for viewing.