Thank you for looking. I purchased this when I was learning a musical instrument, and I stored it without using it much. It was kept in a drawer, and the whole thing has slightly discolored. The power turns on. I will ship it with the batteries removed. Old model ● KORG Tuner CA-40 Size: 10mm x 67mm x H15mm ✦ No metronome function ✦ No instruction manual I would like to give it to someone who will use it. Please refrain from purchasing if you are nervous or concerned about minor details.