ROCCAT Kain 200 Wireless PC Gaming Mouse, AIMO RGB Backlit Lighting, Owl-Eye Optical Sensor, Ergonomic Mouse Feel, 5 Side Buttons, Adjustable Up to 16,000 DPI, Up to 50 Hour Battery Life, Black

This mouse is great, the build quality, the weight, and just laying your hand on the mouse feels great. It is large enough for my hands to not get irritated during long gaming sessions, I have had smaller mice that would cramp up my pinky and my ring finger.Battery life is really good, I am using it about 4-5 hours a day and it usually last me about 2 weeks to 2 and a half weeks until I have to recharge it. The RGB is simple and bright. I am not sure if they have a software to control the RGB or dpi and stuff for the mouse, but I would think if they can turn off the RGB you would probably get way longer battery life than 50 hours.There are only two cons that I can think of:1. When it enters sleep mode you have to press any button to wake it up but when you do so it actuates and if you are on youtube or the cursor is hovering over a link then it will pause the video or enter the link which bugs me when it happens, however when plugged in with usb it does not enter sleep mode so there is no problem there.2. The only way to charge the mouse is by using the cable that they provide you. It is micro usb, but the cable they included will only attach one way. Having the mouse need a slanted cable makes it harder to charge if you lose the cable or it breaks on you.If this goes on sale again I would definitely recommend this to anyone looking for a wireless mouse at the $60-$70 range.

I love this mouse. I loved it right when I bought it during summer of 2020. The only gripe I ever had with it was the scroll wheel would seem to jump in unexpected ways.. wasn't the end of the world but mildly annoying nonetheless. So I put it up with it for a long time, all the while assuming the issue was some problem in how I configured the drivers on my machine, or a mismatch in settings I had made somewhere. Periodically, I'd try to resolve the issue but never quite got it working properly, and then I'd get busy with work and forget for another month. It wasn't until recently that I was using the mouse on another OS that I realized I was experiencing the same issue in a completely different environment with different drivers. At this point it clicked - "Wow. Maybe this has been a hardware issue all along."I immediately emailed ROCCAT and explained my situation. Knowing I was well outside of the 90 day warranty (EDIT: I thought it was 90 days at the time, it’s actually 2 or 3 years!), I simply asked them if they knew of any DIY fixes I might apply that could resolve the unintended behavior.I received a reply within 12 hours from a representative named Sascha, who was most helpful. Sascha gave me a couple of things to try, like resetting the mouse and doing a fresh firmware installation - which did actually make an improvement, it just didn't fix it entirely.Nonetheless, when I reported back to Sascha that this was the case, the next reply was an RMA number and a message saying expect to have a replacement within 14 days after my shipping notification. In reality, I received my new replacement mouse inside of a week of Sascha's last email.The fact they were so quick to do the right thing (even as I was outside my warranty window) has left an impression on me that I thought was worth writing a review for. I love this mouse on a mechanical level, an ergonomic level, and now I love it knowing the company is brand that has integrity in their customer service, and pride in their products.I will absolutely be buying from ROCCAT again, and I can honestly recommend them to anyone reading this. Thank you Sascha and ROCCAT, I appreciate you!UPDATE: I still love the mouse after another RMA. The first RMA worked flawlessly until December of 2021 when it developed the same issue the first mouse had. I emailed Sascha again in the same thread from nearly a year prior, and again the dude replied immediately. This time I thought there was no way they’d give me an RMA. I was simply asking the rep if they fixed the mechanical issue so that if I buy another one, I won’t have to worry about it. That’s how much I like this mouse - I was going to buy another after it failed with one year of use.Turns out I didn’t have to. Wherever I read the “90 day warranty” when I first was shopping for mice was wrong. It’s actually like a two or three year warranty, and so Sascha wrote me back with another RMA number without me even asking. On mouse #3 everything’s been great so far. I think they might have fixed this issue because this scroll wheel certainly feels better than the other two and Im going on a few months with it.

I guess most people -- especially in America -- have fairly large hands. Let me open with: this is not the mouse for you if you do. A lot of mice from competitors like Razer are almost famously large. This falls into a class of mice that are, thankfully, designed smaller for people like myself who do not have large hands.The biggest difference in design is a bit hard to explain. There's a sort of small hump in the middle of the sides. If you use a claw grip it really makes a huge difference for grip and comfort. It's ever so slightly longer and less wide than some of its predecessors, but seems to have struck a pretty good balance. All in all I found myself going from getting hand pains with my previous mice when using the mouse too much to this one actually all but completely eliminating that.It can work both with the USB cable plugged in and from an internal battery. Unlike most of its wireless predecessors, this one finally uses an internal lithium ion battery, so no more putting AA or AAA batteries in. This is not only more convenient, but it also means it is, overall, lighter than it would be if it used them. The difference is relatively subtle, but nice. Though of course it may be more inconvenient if you don't charge it once in a while. As for battery life, I saw the review saying it was terrible and absolutely cannot agree. It says three days, but I guess that means three days of heavy use because with a more normal use (gaming some hours every day but otherwise mostly using it for web browsing, streams, etc etc) I'm finding the battery level hasn't actually dropped much at all. It probably means literally three days -- as in 72 hours -- of constant use. But no one is continuously moving and clicking for 72 hours, so the real life result is much longer.The wireless functionality is, as expected, excellent. I can't notice even the slightest hint of latency even in high speed FPS games where tiny differences truly stand out. This may come down to it using a custom receiver, which I suppose could be a problem if you lose it, but modern Bluetooth protocols are pretty low latency these days too, so I think it's safe to say that wireless mice for gaming are here now and latency just simply is not a concern anymore. That said, you can still plug it in. If you plug it in it will not use the battery saving features like turning off the LEDs (or whatever else you may have set it to do) if you don't use it for a while. It's worth noting here that if you plug it into an external USB charger rather than your PC this means the lights stay on even after the computer has shut off (which can potentially interfere with sleeping, so something to bear in mind) but it is interesting that it continues to work wirelessly even while plugged in to USB power.