Bests & Worsts Reviews from Amazon

I had prior given 4 stars to this scale, but I have to take 3 stars off after buying a replacement for my old one which simply stopped working. The new one is off much more than the old one was. Every single measurement is inaccurate, every other time, and sometimes even every single time it reads something different. I calibrate it and the very next readings are already contradicting each other. It has no kind of accuracy at all to the point where it is unusable. I will have to look for something else. This product is garbage now. No other reviewer mentions what calibration weight this scale requires. An information I wish was available when I ordered it. Although I did my homework I still wasn't able to find this info anywhere. This info should have been sent by the manufacturer to Amazon. The only clue you get from Amazon -even though it is not their fault - is in the "frequently bought together" section where a 50g calibration weight is suggested. So I bought the 50g only to discover (once I opened the box and read the instructions) that the manufacturer of the scale specifically requires a 500g calibration weight for this scale. This information is essential, I believe, and should have been made available to Amazon by the manufacturer. More so, I tried to contact the manufacturer and left a message asking them to tell me which calibration weight they recommend before I buy the scale. They never bothered to call me back. For this I give the manufacturer a rusty 1 star. How you treat customers is almost as important as the quality of your product. For the way the scale functions I give it 4 stars- it seems to work very well for the weights that it is designed to measure - (down to .1 g or 100mg). To Amazon, who tried to fix my problem, I give 5 shining stars! but I'm still waiting to see the info changed here, so that no more people buy the wrong calibration weight like I did, despite all my efforts to find out which one was required! So get the 500g calibration weight if you think you will need one for this scale.