Vassink Ergonomic Mouse Rechargeable Wireless Mouse 2 4GHz Rechargeable Wireless Vertical Optical Mice with USB Receiver 6 Buttons

UPDATED REVIEW: I reached out to the seller about this problem 12 months after I purchased the item. Seller sent me a new one free of charge. I notice now it's a USB-C mouse, instead of the old micro USB. I'm guessing improvements were made and addressed somewhere between when I purchased the mouse and now. The new USB-C mouse is working just fine, let's see how long it lasts. But changing my review to 5 stars because of the seller follow up. Original review: The scroll wheel stops scrolling up smooth after a couple of months. I would need to clean it with compressed air or electronics cleaner but it would only work smooth for a couple of minutes. Haven't found a way to pry it open and see if I can clean it. First time it has happened with any of the mice I've had. I would look for another product because of this. Other than that is great. Read more

This is the coolest mouse I've ever used! When I show others, they're often confused by the shape at first, but when I show them how easy it is to use and how comfortable it feels in my hand, they become very interested. Keeping my hand in an ergonomically comfortable position makes a big difference when I have a lot of work to do, like entering a whole batch of grades. It's super easy to connect to my laptop -- just plug in the wireless USB connector, turn on the mouse, and I'm good to go. The charge lasts a really long time, too. The mouse buttons and scrolling wheel work very well, and the click isn't noisy at all -- just loud enough that I know I've actually clicked it. Teal is my favorite color, and this perfectly matches the teal case I bought for my laptop. Read more

Bought this mouse in 2022 and it worked flawlessly. Loved the ergonomic design, fits my hand well and it was cheaply priced. Fast forward to 2025: buttons still work well but unfortunately the scroll wheel has started to malfunction. When scrolling, sometimes the screen jumps and goes the opposite way. ex: scrolling down and every other click on the scroller, the screen scrolls up. Either way, it was a good mouse but was wishing it lasted longer (Three years I guess isnt too bad for the price). Ymmv! Read more

I do CAD so I am mousing all day and night. I've tried them all including Logitech Master and I end up with some kind of rpetitive stress injury from holding my hand at awkward angles and clicking continuosly. What is wrong with thes mouse designers. Hold your hand in a natural position then FILL your palm! It isn't that hard. THis one is very light, very comfortable an natural feeling, glides with no friction without feeling like you're pushing around tennis shoe, is precise enough for pixel level selection without stress!! It is simple, no frills and fancy features but who cares about frills when your tendons ACHE SO MUCH YOU CAN'T EVEN WORK! I do find myself havibg to straighten out my index finger too much to clck comfortably, it woul be helpful if the buttons were on the backside but still the bestI have used. TIP! It goes to sleep. Just click the button on the top to wake it up. Took me a while to figure this out. Read more

I wanna start off with the good and say this mouse is really comfortable and has been great for my hand so far. The buttons are comfortable as well. I haven't had the time to test it for any intense gaming, but I can see myself using it for that when I do, since I had lost a lot of features when I got my last mouse to replace my gaming one. Unfortunately, it's got some quirks that are really annoying. First, its really unclear when the battery is done charging, so I have no idea when to take it off it's charger, and the instructions didn't say how long it took either. The manual boasts that it can last up to 3 months fully charged, but I left it to charge for around 5 hours the night I got it (assuming that was good enough) and it died after little over a week of me getting it. Similarly, it would constantly turn off while I was actively using it, and I'd have to click the buttons on it several times to "wake it up" again. The scroll wheel would also occasionally stop responding. These problems aren't deal breakers for me, but they are REALLY annoying, so it might not be for everyone. Regardless, it does it's job as an ergonomic mouse decently enough in my opinion and is worth a try at the very least. Edit 30/07/23: the problem has gotten worse and really ,really annoying. The cursor will jump across the screen when I use this mouse and itll stop responding completely. I wouldn't mind this if I was able to know when it's done charging. Edit: 19/08/23: Consistently dies after around a week of use despite charging overnight. Despite being charged it'll act like it's dying (constantly going to sleep, freezing, jittering) and then spontaneously die mid use. If this doesn't bother you I'm sure it's fine because it's comfortable but otherwise I can't really recommend it now. 10/12/23: Hardly usable now and it drives me insane. Constantly freezes and disconnects despite full charge and makes it impossible to click on anything. Read more

First time trying a vertical mouse because I heard they're better for your wrist. It's a lot more comfortable than the mouse I had. No batteries to replace so you save money there. It also goes into power saving mode when you haven't used it in a while. Just make sure you charge it every now and then especially if you use it for gaming. One complaint I have about it is that it's hard to tell when the battery gets low. If there is a visual indication, I'm not seeing it. But if you notice your mouse's response being sporadic, it's a sign that it's getting close to dying. I don't use the M4 or M5 button so I don't know if those are as comfortable to use as a normal mouse's. Overall a pretty good mouse and definitely puts less strain on my wrists even with long hours of use. Read more