Thank you for viewing. ◎ Operation confirmed. ◎ Beautiful condition. ◇ Product Name: Headphone Amplifier amplug2 ◇ Model Number: AP2-CR Classic Rock ◇ Specifications: 9 effects equipped 180-degree rotating storage plug ◇ Size: 86 x 36 x 31mm ◇ Weight: 40g ◇ Batteries: 2 x AAA ※ Some discoloration on the battery terminals, but conductivity is not a problem. ※ This is a used item, so there may be scratches and stains. Please check the photos and understand before purchasing.