This is a rechargeable Bluetooth keyboard that is full-size and folds in the middle. It works well with Android, IOS, or Windows.
This keyboard folds in the middle. When folded, it is almost rectangular. Its dimensions when folded are 158 x 102 x 13 mm. When unfolded, it's like two rectangles attached at one side at an angle. It's hard to explain this. When unfolded, its dimensions are 328 x 102 x 6 mm. The micro USB port for charging is located at the top of the keyboard, just to the left of where it folds. Half of the keys, including a small spacebar, are on the left. The other half, with a second spacebar, are on the right. It's very light, weighing only 176g. When folded, it closes magnetically.
Like most keyboards, it has bumps on the f and j keys. Other than that, it has no accessibility features.
When I got this keyboard, I was unsure of how to turn it on. I had to have a sighted person read the manual. I found out that there is no on/off switch. Opening the keyboard turns it on and closing it turns it off. It's very easy to use once you get used to the extra spacebar and to where it folds. I wasn't sure it would be easy to use on my lap because of the fold, but it has been. In fact, I think the fold helps since it allows you to put the keyboard in different positions besides being flat. I also had to get sighted assistance to know how to pair it with my phone. To pair it, you press the FN key and the t key at the same time. Once you do that, it shows up as an available device. There are also other keys that you should press when switching between different operating systems. This allows the keyboard to customize what shortcuts do according to what device you're using. I hardly use it with anything but my Android phone, so it's hard to remember for sure, but I believe pressing FN+w sets it to work with Android, FN+e sets it for iOS, and FN+r sets it to Windows.