Mini 2-in-1 Wireless Bluetooth Mouse & TF Card Reader – 8GB TF Card Included, Type-C to USB Adapter, Rechargeable, Ultra-Compact (78×38×22mm), Perfect for Travel, Office & On-The-Go, Green

It is very small
This is really a surprising little mouse. Not only is very small, it works great and not to mention it comes with a 8gb mini disc. If you’ve got big hands this isn’t for you. I like this little thing. It’s also bluetooth built in so you can use it on your phone. —Billy —

It’s aim is portability and versatility/functionality, not long-term comfort. Be aware of that.
I want to make one thing very clear: It will not and can not be as comfortable as a full-sized mouse that fills up your palm when you are holding it: You can’t ‘rest’ your palm on it. We know that going in to it and we will know that coming out. It is comfortable enough to use (though, again, not as comfortable as full-sized), but I imagine the strain may only be apparent after long term use; in the short durations and spurts I have used it, there was some unfamiliarity, but nothing I would call “strain.”I am not going to judge this product based on long-term comfort though, because that is not it’s aim nor is that it’s promise: It’s aim is compactness and portability, and there are some things you have to give up in order to attain those. I believe buyers looking to purchase a mini mouse need to be (or would be) aware of that. (If that compromise is not for you, you might try a slim mouse instead.)Now that we have the obvious out of the way: I cannot believe how much they’ve packed in to this tiny thing! This is optimized to fit versatility and functionality into a small travel-ready package, and it excels that. It’s rechargeable via usb-c, it can connect via bluetooth, it has a TF / microSD card reader with a data cable that can be packed neatly into a innocuous leash with braids so fabric-y and malleable (the fabric outer layer is; actual wire seems thin) that it took me a second to recognize that it is, in fact, a cable. It also does not make much of a sound when clicking (a mouse-sized knock; not very high in pitch compared to my full sized mouse), though the haptics (clickity-ness) are still (thankfully) present. Dragging with no mouse-pad does make some noise –especially if you choose to keep the leash attached and drag the wire holder along with the mouse.I agree with one of the other reviews I read though: It is such a pity that the mouse connection can only be had through Bluetooth. A usb-c and usb-a module (even better if the wireless connection can be integrated into one end of the data cable) would have gone perfectly with this since it is for travel and presumably, you would not always want to take the steps to connect to Bluetooth on a computer. For example if you are giving a short presentation: the time it takes to plug in a USB vs connect to Bluetooth is different enough to be a deciding factor on whether or not to use this –especially if there is a spree of presentations queued up behind you and time is of the essence.As far as durability goes, I see no issues with it in my use, but it is* plastic. It is not “built tough”, but treat it well and I don’t see there being any problems –at least no greater than with a normal mouse.One thing I do need to mention: getting the TF (of microSD) card out was a bit more work than I would have liked; You have to get you finger –or nail rather– under it to pull it out (after it has been put in it’s physical “ejected” state, as described in the manual). It will not come out on it’s own or by trying to flick/slide it out from just the top part of the card.)Overall, I think this achieves what it set out to do, so I am giving it a 5 star. There is room for improvement.

I apologize for laughing at its size! Really useful mouse!
Ok – I really kind of love this mouse! When I opened the box and saw the dongle, I thought – oh great, I’m not using it if I have to leave that plugged into my laptop all the time. But I charged it up and flipped it on … showed right up on the Bluetooth device list and connected immediately! Haven’t had a problem with it since.No, it doesn’t have bells and whistles. It has left and right click, and scroll. But I can even use it on my pants leg or under a blanket to stay warm – no surface has bothered it so far. The click is almost silent also! The one thing I will say is that it has a pretty sensitive pointer speed. It flew around my screen until I changed the setting to slow it down. It only takes a second to do, but unfortunately, that setting is too slow for my other mice, so if I go between them, I may have to change that setting or it will drive me nuts. That’s about the only “negative” thing I have to say!! One tip – I was afraid at first that it was going to be uncomfortable because I was trying to use my typical claw grip on it. It’s too small for that. It feels much better once you relax and just lay your had on it.