I'm selling this item because I received a duplicate around the same time. It has been opened for testing and photography for the listing, but as you can see in the photos, there are no scratches or stains. I have also confirmed that it works properly. I'm currently using the same item, and it has eliminated my anxiety about whether I'm breathing during sleep, resolving my sleep deprivation, so I highly recommend it. It currently retails for 9,800 yen, but I'm offering it at a lower price for the year-end clearance. #Babysmile #BabySensor