I was looking for a balance, when you do not constantly have to change the batteries. The scale shows the weight unfortunately :) just like my old digital scale. So I'm assuming that it weighs exactly. The zero point moves about a bit, can be jeodch relist quickly. The scale is very large in relation to my old scale for our bathroom. On tiles the scale is set a bit slippery when it. You can read the weight to 500 g exactly.