Serial Number: 691100 Made in Japan Perfect working condition. Used personally (LED lights up with adapter, compressor effect works well). Can be used with BOSS ACA adapter or 12V power supply. Used with Voodoo Lab Pedal Power Plus 2. Exterior: Shows signs of use (light scratches/scuffs, good condition). Internal: Battery terminals are present but not connected to the circuit (rust/battery leakage), can be used without issue with BOSS ACA adapter or 12V power supply. Please check the photos. Accessories: None (sold as a single unit). If you have any concerns or questions about the product, please ask before purchasing! To avoid any issues, please refrain from purchasing if your concerns are not addressed. No claims or cancellations after purchase (strictly adhere to Mercari regulations). Instant purchase OK. Please refrain from purchasing if you are overly sensitive. Thank you.