Bests & Worsts Reviews from Amazon

It is not accurate, and to fix that, you need [1] a calibration weight (not included) and [2] use the undocumented calibration mode (turn the unit on, then press and hold the MODE button until it says "CAL"). I've got 3 50g calibration weights, and 1 100g calibration weight, but no 500g calibration weight. So I would have to buy one to get this to work properly. For accuracy, I compared the results of this scale to [1] a 9-year-old .01g scale with a 100g capacity and [2] a brand new .001g scale with a 50g capacity. I weighed 5 different items (1g or 1oz) plus the 4 calibration weights (50g or 100g). For 8 of the 9 items I tested, it reported a weight .03g to .09g higher than either of the other two scales. For example, it thought the 100g calibration weight was 100.09g. It also seems to have precision issues. For example, weighing a ~1oz object showed 32.50g. But weighing it again (after tare'ing), it showed as 32.52. And then weighing again, 32.50 again. And when I went to take a picture of the 100g calibration weight was 100.10g (versus 100.09g before). I gave it 2 stars (rather than 1) because for many people, this is fine: perhaps yours will come properly calibrated, or you are fine with less than .01g accuracy. Note that I did press the TARE button before measurements (to ensure that the scale was starting from zero). If you are buying this scale for the advertised .01g accuracy, you will need to also buy a 500g calibration weight and access the undocumented calibration mode (and assume that the undocumented calibration mode does indeed work). For me, the accuracy just isn't good enough, and I will likely need to return it.