There are no noticeable scratches or stains on the main unit. This is an offering of the main unit and the box. The TC ELECTRONIC / POLYTUNE 3 MINI is a mini-sized model of the POLYTUNE 3, a pedal-type polyphonic tuner with a built-in buffer for improved usability. A switch to toggle between true bypass and buffered bypass is located on the side of the unit, allowing you to switch according to your needs. It achieves high-precision tuning and high visibility with high-intensity LEDs in a compact body. Guitar Tuner Effects Pedal