I need an adapter to attach the dongle to my laptop. Why can't use built-in Bluetooth?

The sealings in the box had been removed before. It might have been on a display or something alike. The mouse works perfect but for me is really important to have a brand new product The seller should advice this kind of details beforehand. Thank you

Works fine, but not all games are good using this mouse because it is a little on the small and light side. Hard to aim snipers but good for games that does not require too much percision, like Minecraft.

Good mouse but not for me feels very cheap

I like this mouse. It seems to be easier on my carpal and cubital tunnel syndrome issues than many others I've used. But it is very sensitive and it is hard to adjust the sensitivity on this mouse. For that reason, I find it sometimes difficult to click when I need to click. Otherwise, this is a good, ergonomic mouse for gaming. Thanks!

This mouse wants to be phenomenal, and it almost is! Feels lightweight and comfy in my hand. The form factor and the clicking feels amazing. However, it suffers from a fatal flaw that develops in 4 of the same model I've owned of this mouse. The scroll wheel will develop an issue where scrolling up will occasionally make it scroll down, and vise versa (within 1-2 months of use). It's manageable, but it's not promising to see this issue exist in every iteration of the mouse I've owned!

The mouse is nice, it’s a little under fit for my hand but that’s more of my fault as this is the mini, I’ve never had a sensor issue and the buttons all feel really good, however every now and then the mouse one button just doesn’t register a click, not a huge issue but can be frustrating after a bit, however that maybe just my use of it, I highly recommend if you need a light, Simple gaming mouse, the side buttons feel good and I don’t have many issues accidentally pressing them, all of this of course, if you have the hand for it m

This mouse is well-designed, but the "hump" is just as big as its older brothers', making it impossible to move it with your fingers while keeping your palm in a stationary position (like I was hoping to). In other words: Yes, it's "slimmer," and yes, it's "shorter" but the "arch" is the same as a larger mouse and you'll have no additional clearance under your hand for a "stationary palm/mousing with just your fingers" play style like I hoped a "mini" would allow.

So I go this mouse and expected to be able to use only one usb slot, using the wireless usb, but my mouse wont work without using both of the usbs, but I didn't care much about that, instead I noticed that others dock's were lighting up and mine wasn't. I've heard this was a problem with many others and I tried everything and nothing would light up the dock. Also, my dock wont charge my mouse, so I have to use the cord it came with. I've tried everything I've seen to fix these issues but it seems like sometimes the dock comes broken as I've seen people say so also. Just be aware of that possibility.

Not for a small hand. It is very light, but, the size could be smaller and lower profiled. It's not ergonomic for people with small hands. (avg. ring size 5.5) (my hand measures 6.75 x 2.75 inches). It seems well made aside from being extremely light.