The needle is an external product. There was a sound when checking. The adhesive between the exterior and interior of the body is peeling, and the inside comes off when the needle is inserted or the lead is removed, so it's junk.
Maintenance information: 2025.11.30 confirmed (sound output is OK during check, adhesive peeling between exterior and interior of the body. (It will be handed over as is for junk items)
Accessories: none
Main specifications: mm type weight 6g