Pet Scale Weight Scale Pet Health SPH-20 Sun Corporation Maximum 20kg, Minimum display 10g This item has been stored at home for a long time. Requires 4 AA batteries. Outer box and instruction manual are not included. I tested it a few times for the listing, and there are no problems with the measurement. If you don't press the power button firmly, it may not respond or display a number other than zero. Please understand that this is a used item.