Other features: Noise canceling There are no noticeable scratches or stains. Please also check the images. As this is a used item, please understand that there may be minor scratches and stains associated with use. Basic operation has been confirmed. Battery condition: After playing for 1 hour, there was no significant battery drain. Please also check the images. Image 9: Before playback Image 10: After 1 hour of playback Alcohol cleaning has been performed. Everything in the images is included. Serial number: 11501341