I purchased this for a pet, but the promised pet fell through, so I no longer need it. Therefore, I have never used it. It has been sitting around, so the back is a little black, but it's practically new. It can measure weight in 1g increments. It requires two AAA batteries. The batteries that came with it are included, and it's ready to use. The dimensions are 35.7cm x 25.4cm x 4.3cm.