This is a small external filter made by NISSO, which I believe is similar to the famous Edenic Shell filter. It includes sponges and filter media. Power and water flow have been confirmed. The main unit only; the accessories are unusable due to deterioration. Although I have confirmed its operation, it is a used item of many years, so please understand that it is non-refundable and non-returnable. The price is just the starting price. I'm looking forward to your comments. Also, I think it's a good deal because external filters of this size are rare. - Brand: NISSO - Type: Filter - Size: Medium Thank you for viewing.