This is one of the best keyboards that I ever owned, so far, the design is sleek, is not ergonomic (nobody is perfect), but it has good weight, the space between keys is very good, it looks great and you don't need to worry about batteries anymore. The best part is, you don't need to put it under direct light to re-charge the batteries, if you have some sort of light source near to the keyboard, that's all it needs. I don't know about this product on the long term, it's been only one month since I bought it, but it has been working well so far. I'll change my review if I notice something bad about it, but for now, I just have to say "it's a really good product and I recommend it 100%". Hope this help.Just one comment about the receiver, it's better if you don't plug it behind your computer, if you have a front USB, use it, the reception it's a lot better. 

Question: How was the weight?
Answer: good weight