I received this as a gift, so the details are unknown. It's a sanshin with a dou (body) made of panels. Total length: 78cm, Weight: 1030 grams The doumaki (body wrapping) has faded over time. The sao (neck) doesn't appear to be bent. There are four sound holes on the back, and it produces a pleasant sound. This is an old item, so please consider it as a vintage/junk item.