The scale displays 0.00kg and is functioning normally. Operation has been confirmed, but the batteries have not been replaced. - Weighs from newborns up to 20kg - Memory function to show increase/decrease from the previous measurement - Tare function to subtract the weight of towels, etc. - Shows the increase/decrease from the previous measurement - Can be used without the tray I used it a few times with a towel. No box or instruction manual. Will be shipped in a cardboard box with cushioning material. There are some scratches. Please check the photos.