I’ve been using this device daily for going on 4 months and it’s accurate, reliable, and worth the price.The only con I’ve noticed is that the setting for the tray is a little skewed and would shift depending upon where the item being measured was placed. It was concerning at first for the sake of accuracy, but I haven’t found any contradictions in weight depending upon the skew.We’ll see how it continues to hold up.

Si es lo que esperaba.

Probablement trop cher mais j’en suis satisfait. Simple et efficace .

Received defective product and company promptly shipped replacement unit.

The performance is superbly good. Scale is more stable than even its own manual implies. I'm a scientist and regularly use for work 0.001- 0.0001- and even 0.00001- gram reading scales and analytical balances . I've written (non-published) tutorials and essays. Even concrete explanations of buoyancy correction and so on. This scale is a great 0.001-gram-resolution performer. The draft shielding however can very easily torque the surround plate and thereby effect a perturbation to the pan support and thereby obviously perturbing the force that is sensed (and thus the reading displayed). Just use the balance in a place without any draft and you'll be best off. If you DO use the draft shield be very sure that it mechanically is fully secured into ONE way it wants to go. This is not so easily done though. Battery operation works just fine. The accuracy is superb. (TECHNICAL: It seems that the 200-gram weight they perhaps purposely chose to be under 200 grams. Mine was 199.99546 grams. Never mind how I know. The point is that the scale will force this mass to be called 200.000. But this is good. A tidbit extra gain so that if you, like most folks, ignore buoyancy correction for weighing in air, then you'll be a little bit less wrong from the teensy bit higher gain: calling 199.995, 200.000 by the balance. Of course I have no idea what true mass your weight will be. And the value I gave was indeed true mass, not conventional mass value. And that term of art would need a couple of pages of explanation, as does buoyancy correction etc. ALL of which I am skipping.) So then: EXCELLENT performer. Quite accurate. Good resolution of 0.001 grams for its range (500 grams). EASY to use. The manual is well written too. AND the manual has excellent warnings -- even better than other "more serious" laboratory analytical balances give! That was a surprise. Value : Money ratio is outstandingly good.An example application. Frosted Mini Wheats is the ONLY cereal without tons of salt dumped in. (Skipping that topic, but it does amaze me.) So I like it. Then there was Mini Bites version: "half the size". Now is that half by mass (or volume) or in each dimension (which would give one-eight the mass). The scale used on 30 pieces apiece of regular Mini Wheats and Mini Bits Mini Wheats gave virtually exactly a 2.000:1 mass ratio. Half is indeed by mass. (If I measured with a caliper etc... could confirm cube-root-of-two or if not, then the mini bites pack the wheat threads... you get the idea. I'm a precise guy and a metrologist and so on. If I like this balance you definitely will. And there's nothing wrong with it being simple and easy. I would not use the draft shield if at all possible. And I would get the 200-gram weight provided analyzed for true mass. Best is indeed if it is a bit under 200 grams for TRUE mass. That way the teensy extra gain will give the displayed values being even closer to true mass even if you don't do buoyancy correction for weighing in air.For things like my cereal mini bites vs. full-size, this scale is a real pleasure. And perfect range and display resolution. Great for pills counting too. Many other uses. And very little money.

I contacted Bonvoisin regarding the low accuracy and they told me that the error range is ±0.004g. This was not stated anywhere on the Amazon page. Also, the reading is often different on repeated trials, sometimes it does not return to zero after removing the item, and sometimes the reading keeps drifting. This scale is less accurate than my $20 accuweight scale that I also got from Amazon, and after import fees I paid around $200 for this one! I'm in the process of returning this item.