Used only a few times. It has been stored away, so it's in beautiful condition with only minor scratches from storage. There is no instruction manual. Operation has been confirmed. Alcohol wipe-cleaned. New batteries will be installed before shipping. Registered users: 4 Main materials: ABS, PE, tempered glass Power supply: DV6V, 4 AA alkaline batteries, character height (mm): 31 It can be linked with iPhone and Android smartphones for data management. Equipped with a "muscle quality score" measurement function that analyzes the quality (condition) of muscles, analyzing muscles down to the state of muscle fibers and scoring them. The judgment of the measurement results is displayed clearly with the backlight color. You can select your favorite color from 4 colors for the LCD display. By incorporating the technology of professional body composition scales used in the medical field and research facilities, and measuring body composition at two frequencies, more accurate measurements are possible.