I purchased this new on Amazon about 2-3 years ago and used it only once, then stored it in a dark place. I have confirmed that it powers on for this listing, but I have not actually tested it for cooking. I have also cleaned it, but as I am not a professional, there may be fine dust or dirt. Please purchase only if you agree with the above points. IRIS OHYAMA LTC-01 Sous Vide Cooker, with a recipe book for a variety of dishes. - Brand: IRIS OHYAMA - Model: LTC-01 - Included items: Recipe book - Function: Sous Vide Cooker Thank you for looking.