I purchased the Logitech K380 Multi-Device Bluetooth Keyboard along with the M590 Silent Bluetooth Mouse, and I have to say they make a great combination for my setup. K380 Pros: + Overall size of the keyboard makes this a perfect travel device + "Flow" between three devices works flawlessly + K380 can be linked to follow any Logitech "Flow" enabled mouse (like the M590, M720, or MX Series) + Keyboard is very comfortable for me to type on (first test was 57 WPM, 96% accuracy vs my 65/96% avg.) + Keyboard layout is excellent for PC - all keys are exactly where they should be + Home, End, Page Up, Page Down work with fn+arrow keys (despite others saying they don't work) + (2) AAA Batteries will last a long time + Don't have to plug it in to charge or connect + Physical On/Off Switch is always good to have + Very good build quality - feels much more sturdy than it looks + Decent Price ($29 at time of purchase in 2019 Q2 - got this and M590 for >$60) + Logitech Options software is very useful and easy to use + Great value and feature set for the price K380 Cons: - Round keys on keyboards always look atrocious and unprofessional - Not enough programmable keys through Logitech Options software (can only modify F4, F5, F6 and F7) - Arrow keys are too small, especially up and down which essentially touch each other - No USB connectivity limits compatibility (only connects to devices that have Bluetooth) - Weighs a bit more than you would expect it to (not necessarily a bad thing since it's built well) - No height / angle adjustment legs - Wish it was more Black instead of Gray - Wish the ugly Yellow function keys were any shade of gray instead of any color (like on the K375s or K810) Overall Impressions and other thoughts: The Logitech K380 Keyboard has quickly established it's place on my desk and in my daily carry bag. It's diminutive size, excellent build quality and comfortable typing experience are standout features. The round keys look completely ridiculous but actually work shockingly better than I expected. The three bright yellow function keys are gaudy and should be replaced with a more subtle contrasting shade of gray (or let them just match the keyboard like the K810 does!). The F# keys work without having to hit the fn button, which is always preferred, and the fn+arrow keys work for Home, End, Page Up and Page Down, which is critically important for me. Setup was very simple and everything has worked flawlessly with this keyboard, from pairing through Bluetooth on multiple devices, and syncing it to follow my M590 Flow Mouse, to configuring the keys in Logitech Options - it's all been a very satisfying experience. I wish Logitech would make a separate similar device that was just an add-on number pad with trackpad (no keyboard) that was the same design as this. I know there are tons of non-Logitech options out there for this purpose, but a matching Logi number / trackpad with the same color scheme and build quality would be nice. I really didn't think I'd like typing on this keyboard when I saw it at Best Buy, but as soon as I touched it, I was immediately surprised by how typing felt on it, in a very good way. I typed on all of the keyboards in the store, and I ended up buying this one, so that says something. It wasn't the very best typing experience of them all, but the overall size, features, and total package of this product was the best offering for the price and for my needs right now. I wish they had the K810 for me to look at, but that unit seems very difficult to find. Would I pay $99 for that keyboard with squared-keys, black finish, matching F1-F3 keys, back-lighting with hand detection and 5 adjustment levels, etc.? Yes, indeed I probably would, although a sale price around $60 would make it a no-brainer for me. Even despite my preference for common replaceable batteries versus having to recharge the device with a cable every 10 days or so, I'd still rather the K810 for it's design. But my current search shows prices from $125 for a used one to $280 for a new one, which is out of the question. Overall, I am very happy with my purchase of both the Logitech K380 and M590, as I think they work very nicely together and are both ultra-portable for on the go readiness. I would highly recommend this product.