The product is good. Long shipping - about 40 days
Both two glass hydrometers came completely destroyed. Perhaps could have been wrapped more carefully, but I understand that this happens sometimes. Problem is, seller expects me to assume responsibility for how seller wraps product, and only offered 20% compensation, refusing to resend or compensate for shipping costs. Kept asking me to "please help" seller. It's my responsibility to "help the seller"?? Seller increased compensation offer to 27% after I disputed. Wasted a lot of my time, but Aliexpress agreed with me, and I got 70% money back. You have been warned!