I am updating my review to give this keyboard 4 stars after the company reached out to me and provided a free replacement after I returned the first one for a full refund. The customer service reps were very responsive, almost to the point of being aggressive, but since they shipped me a free unit and since this one is working very well, I thought it merited revising my review up to 4 stars. I am still deducting a star because the first unit worked so poorly, and because the keyboard is just a little too flat to be ergonomic, but overall I am pretty pleased with it.
Although the slim profile is a bit less ergonomic than other chunkier keyboards, it also makes it a easier to store and stow away, in case you want to travel with it. The keyboard is not as tactile as some others, but it takes less effort to press the keys than on some other keyboards, and I like that sometimes when I have to do a lot of typing and my hands start to get tired. One thing to note is that this keyboard is pretty wide, since the keys are full width and it includes a number pad. This means my mouse has to sit a bit further off the the side than it does for other keyboards, but that's the trade-off for a less cramped typing experience. I have not yet exhausted the battery from it's initial charge, so I am not yet sure about battery life. The bluetooth pairing was simple and quick, and I have yet to experience any issues with missed or doubled key strokes.
All told, I will probably switch back and forth between this and another keyboard so that I am forced to change my hand positions and thereby avoid stain. I would recommend this keyboard for folks who either don't type all do, or who routinely switch their set up and position. If you are someone who types all day every day, you might want to invest in a larger, more ergonomic, and more tactile keyboard. But for the price, this seems to be a solid bluetooth, rechargeable batter-powered keyboard.
Original review: After seeing so many positive reviews and liking the sleek look of the keyboard, I was surprised to discover that the keys have very poor responsiveness. My feeling is that if you feel the key depress, the keystroke should register no matter where you hit on the key. I was thus disappointed to discover that keystrokes toward the edges and especially the corners of the keys did not reliably register--this was even true of the space bar, which is especially problematic. And I'm not talking about the very very edge of the keys, even keystrokes a couple of millimeters inward were often not producing an onscreen response.
Comparing this to another wireless keyboard I have and the keyboard for my laptop itself, I was able to confirm that keystrokes which reliably register on these keyboards do not work on this product. To me this is the single most important thing a keyboard should do—reliably record your keystrokes. That it doesn't do so is a total deal-breaker, and I think merits the one-star review I am giving this.