Keys feel great. They are low profile because of its size and portability, but they have good snappy feel and are stable enough for comfortable extended use.Backlight is nice and bright and adjustable. Quick switch between three devices works good and is handy. USB c recharging is fast and convenient. It doesn’t send data over usb unfortunately, but it’s not a pro keyboard so I wouldn’t expect it honestly.Very useful for an IT tech’s bag, or for people using Steam Decks that want to use desktop mode to play a keyboard and mouse game.

Just being a consumer and far from a big writer or product reviewer, I normally never write any lengthy review.......... but this time I will make an exception. I think that this product can be a great solution for many more people than you might guess!I bought the ProtoArc Backlit Foldable Keyboard (the new model XK01 Plus) and did that for a different reason than most people would. But after I put it to the use as I wanted to, I found out a few pleasant surprises that makes this a five-star WINNER for me. But nothing is perfect in life, and so I also have a few (perhaps nit-picking?) critical observations ..........The concept of a full size foldable is not new. It ha been around for a while. Now that it is available with Bluetooth it provides the extra mobility. NOT only can a float able keyboard be a smart solution for "typing on your mobile phone", "typing on your smart TV" or "typing on an I-Pad or other tablet), but it is also a great solution for a laptop with a "small keyboard" - for example if your laptop does not have a full numeric keypad.... BUT HERE IS something I "discovered" as an other benefit of a foldable keyboard... (read on...)How i use it? As a frequent traveler I often, and sometimes for long hours, have to use my laptop. Problem: poor sitting postures in front of a 16" screen: Yes 16" is a decent size screen, but it is still small to work on when you have to work on it for many hours at the time. (a smaller laptop screen may be even less comfortable). YES... I am talking about the screen now......... NOT about the keyboard...I needed a solution for a bad posture....... seated in front of a laptop screen.Here is my "solution" for the bad posture seated for hours in front of a laptop" I bought a laptop STAND that puts my laptop (INCLUDING the laptop's own keyboard) in an elevated position in an angle, and THAT brings the screen of the laptop to eye height. Note: In one of my two pics you see the foldable laptop stand which is from a different brand that has nothing to do with the foldable keyboard. The other photo shows how the entire laptop is on the "stand": The stand allows you to put the laptop at an adjustable angle so that the screen then goes up in height. By the way, the stand is FOLDABLE (collapsible) and it is made of a carbon fiber material. It weighs almost noting and can be easily tucked in a tiny place in your laptop bag or luggage.BUT......... when you use this stand .....the laptop's "own keyboard" will be on a fairy sharp angle and it no longer easy to type that way. And that's where a foldable keyboard comes in. It goes in front of the laptop (see picture). And then the foldable keyboard become the one that is very easy to operate with the laptop screen then exactly at the right height (eye-height!) and at the right angle. Now you have your screen at a very comfortable position.This foldable keyboard is easier to operate than the laptop keyboard.SO, this a keyboard became a posture solution desk work. Perhaps the brand Posture-Pedic should put its logo on this key board too (LOL).NO, I am not a person who needs massage therapists or Chiropractors and hopefully this keyboard solution of creating neck an spine position to avoid fatigue will keep me away from such therapists much longer.In any event, this keyboard......... brought may ADDITIONAL BENEFITS beyond a better posture for me!I have used foldable keyboards 10 years ago, and NO I have NOT compared the ProtoArc with other foldable keyboards that may be available from other brands. But this is what I will share about this keyboard: It seems to be very well designed, of good built quality and offering benefits that are not all explaned at the Amazon web page for this product:1. Folds up to a size of approx 8" x 4.5" with a thickness of about 1 1/4" (thickest point). That is an easy "stow away szie!). But folded open, you have a FULL and FULLY functional keyboard of 4.5" x approx 15".2. I don't know of any laptop with such great functional, large keyboard. Don't underestimate how my productivity GOES UP when NOT frustrated by making many typos on smaller keyboards worse even are the irritatingly tiny keyboards on mobile phone screens. It annoys me greatly when I see how many errors I make on smaller keyboards - even on the best laptop keyboards! It is distracting. Just keep track of it when working on less than a very good keyboard!3. There are also all Fn keys with additional secundary functions such as setting brighter or darker screens, volume up and down, NEXT (song), ZOOM in etc.4, SUPER DUPER smart and handy: See the picture of they keyboard that I am adding: The three orange keys allow you to quickly shift between Bluetooth connections: You can configure and store three keyboard selections on this model foldable keyboard. For example for your laptop, your cell phone and your Tablet. So, that way you can quickly shift back and forth of typing on each of these three machines. Wow, what a great solution for doing email or WhatsApp on your mobile!5. When folded up the unit remains very sturdy. It is made of a sturdy pastic with metallic springs for opening / closing hinges. A plastic carrying case is included (THAT one COULD be nicer for the next model!) and in that case you also find a "Cell Phone Stand" which makes working / typing on your mobile so much easier.6. Finger touch action of the keys: It is fine.... The keys do not have the nice "spring" touch of full size Logitec or other higher end NON-foldable keyboards......... but yes........... this ProtoArc beats all laptop keyboards. It is backlit, has ample spacing between individual keys and the touch mechanism of each key is far better than average!7. Excellent fast Bluetooth connecting.......8. The keyboard has a built-in rechargeable battery that is accessible by plugging aa type C at the front of the keyboard (even when closed. The specs mention that the unit has a standby time up to 150 days and that it goes into a sleep mode after 60 minutes of inactivity (press any key to activate the power again). The power also goes off when you fold the keyboard up and unfolding it turns it on automatically. Smart!On the negative side:A. The specs on the website described that the keyboard folds in four segments. Wrong. There are two side segments of about 4 1/4" each, folding over the center segment of approx 8". Note: The folded unit, once locked together by two easy to slice "locks" (they go over the sides), is very sturdy and easily folds in the plastic storage/transport sleeve. (I am NOT at all concerned about damage when properly stored in your laptop carrying case or suitcase).B. The USB connector for the charge port is in the front. I would rather have had it on the back.......... that way recharging is easier when in use (if you need to recharge during use). NOTE: Thus far I never had to recharge this keyboard while wanting to type at the same time. I found that the rechargable battery gives many hours of power. I have not run out of power and I charge it once a week while I have the keyboard on (OPEN-FOLDED) continuously and use it frequently.C. The specs do not mention the capacity of the rechargeable battery.D. You definitely need to use a hard / non flexible surface to use this keyboard. Once it is unfolded, you have three separate segments, fitting beautifully together (you barely can see then that this keyboard has 3 parts). But they keyboard becomes useless when you would try to operate it on something that is NOT a firm flat surface. So, if you are thinking of operating it in bed you will need to put a serving board or another firm surface of at least 10" wide and 5" depth (length). I cannot see how the designers can bypass that need. It is most likely something you need for any foldable keyboard.E. Too many fancy high quality printed advertising materials on expensive paper stock etc. are in a very fancy box. I would say to the brand: Spend your promotional dollars in a different way. This is a foldable keyboard and not a $1,000 mobile phone.F. NOT cheap (more expensive than some traditional keyboards that are NOT foldable)........... but not cheap of design and construction either! This unit is REALLY a great value for people who can SEE how much time and annoyance can be saved (many split seconds of annoyance drive down your productivity to the point of creeping in fatigue, and reduced efficiency of using your brain for more productive things than in the end frustration (without you knowing WHY you became less than usually productive or less quick in your thinking).In SHORT: A great VALUE for a GREAT product! A winner! Kudos to ProtoArc. Does ProArc offer more products of similar quality and with equally practical unique features???

This keyboard is awesome. I use it with my iphone turning my iphone into my mobile computer reducing the load of a traditional laptop. Was instrumental in taking notes on my phone while at a conference this past February.Having multiple BT channels also allowed me to pair it with my laptop that I kept in my hotel room and with no worries of hitting the touchpad that annoys me constantly and the backlit feature is awesome.If you want the mobility and to have the full functionality of a full-size keyboard this is it.

I absolutely love this it is so much easier to do office work with laptop with this keyboard. Totally portable, so tiny when folded, I use a wrist support with it as it is so flat.

I bought this product to use with my Samsung tablet mainly. I have to go to clients' homes and normally I make written notes. I'd like to be able to make notes on my tablet because I can type faster than I can write! Then I can send the notes to my computer. It comes in a neat little case with a little side pocket for the stand which accommodates a phone or tablet. The stand is very light - a bit too light really. I don't think the stand could accommodate my 10 inch tablet. But my tablet has an integral stand in the cover anyway. The charging cable is of a decent length. It's of a very solid construction, feels like a "proper" keyboard and that's why it's a bit heavier than I expected. However I don't mind that. In the past I had jobs where I was typing a lot (at around 85wpm) and so I was pleased that this feels like a regular keyboard and not like a laptop keyboard. The keys are a good size and it's easy to type with, though it feels flat like a laptop. I agree with others who have commented that having small, unfolding legs on the back so you can tilt it would improve it even more and if it had those, I would even use this with my desktop computer. It would need three legs as it folds into three. With hindsight, I wish I had spent slightly more money and bought the model with the mouse for ease of use with the tablet or phone. So I do advise spending a few dollars more and doing that. I talked to a friend about the keyboard and afterward, she bought one too 😊It paired with my tablet, phone and computer with no effort at all. You simply open it up and it switches itself on. Close it, and it switches off. It arrived with a lot of charge already in it. All in all I am happy with this purchase!