I purchased this about a year ago and used it twice at live shows. As a result, there are small scratches on the casing, but there are no operational issues whatsoever, and I believe there is almost no sign of use. Please check the photos for the condition. If you have any other questions, please feel free to ask. In addition to the main unit, the following are included: Outer box, quick guide, instruction manual, stickers, warranty seal, warranty postcard, My Morydaira user registration information (Everything that was included at the time of purchase.) I have set the shipping time to 2-3 days just in case, but I will ship as quickly as possible. Immediate purchase is welcome. Thank you very much. Quoted from the official website: The MXR® M87 BASS COMPRESSOR features standard controls for studio outboard compressors (ATTACK, RELEASE, RATIO, INPUT, OUTPUT), allowing for precise settings similar to recording. It provides studio-quality compression, smoothing out dynamics while achieving a natural and rich sound. It is a professional tool suitable for a wide range of genres, active in both live performances and recording. With CHT™ (Constant Headroom Technology), it outputs a clean sound with a wide dynamic range. The MXR M87B BLACKOUT™ SERIES BASS COMPRESSOR is a limited edition color model of the "M87," released to commemorate the 15th anniversary of "MXR BASS INNOVATIONS," the MXR series for bassists. It is a stealth-finish pedal with a matte black casing, gloss black text, and bright yellow LEDs.