Used for about 2 months (3-4 times a week). No operational problems. All parts are included. The breast pads and storage bags that came with the set are unused, so I'll include them as is. I will put everything in a clean Ziploc bag and then in the original box for shipping. There are no stains or scratches, but it has been used, so please refrain from purchasing if you are concerned. A lightweight and portable manual breast pump, allowing for more comfortable use and more milk expression. - Brand: medela - Model Name: Harmony Essentials Pack - Type: Manual breast pump - Features: Lightweight, portable - Features: More comfortable - Features: More milk - Included: Breast milk bottle, pads Thank you for looking.