Ergonomic Vertical Optical Mouse USB High Precision Optical Wired Vertical Mouse, Palm Rest Thumb Adjustable 4DPI 5Buttons for PC/Laptop/Mac

If your hands are small like mine, you finger may not be able to reach the scroll wheel. Mine can barely reach it, and it doesn't make for good ergonomics because I have to grip the mouse a little off center to make it work. Think I'll have to return it. Other than that, the mouse feels nice in the hand and if it were smaller, I'd like it.UPDATE: Since it didn't work for me, I gave it to a colleague in my office. He seems to like it just fine. Also note that the seller gave a full refund when I notified him of the size issue. Upgrading to 4 stars, since my my colleague at work likes it.

This is a copy of this mouse by Anker:https://www.amazon.com/Anker-Wireless-Vertical-Ergonomic-Optical/dp/B00BIFNTMC/ref=sxts_sxwds-bia-wc-p13n1_0?cv_ct_cx=anker+ergonomic+mouse&dchild=1&keywords=anker+ergonomic+mouse&pd_rd_i=B00BIFNTMC&pd_rd_r=2254c4af-384b-49e1-aa2e-e42096709f92&pd_rd_w=qbl3p&pd_rd_wg=TWTFs&pf_rd_p=1da5beeb-8f71-435c-b5c5-3279a6171294&pf_rd_r=CN02ND77AZTAM435EW69&psc=1&qid=1592033518&sr=1-1-70f7c15d-07d8-466a-b325-4be35d7258ccI thought that was funny because Chinese companies usually copy American products. But this mouse from China, copied another Chinese company LOL. I can confirm that the back and forward buttons for web browsing are reversed, as noted by other reviewers. My friend has the "real" Anker mouse and it's not reversed. Not too big of a deal for me because I got used to it and it was super cheap. BUT the real Anker mouse aren't rechargeable, while this one is. Plus it was like $10 cheaper. After using both this and the real Anker one, I can say the build quality of this one is a POS compared to Anker. But I can take POS given then price is so cheap. Battery lasts for about 3 weeks.

The description says `colorful LED light` which is true if `just red` is your idea of colorful. The side buttons for going forward and back are reversed. The user guide shows it correctly with the front being forward and back being back, but it`s the other way around. The description also mentions shortcut buttons to change the LED, but they don`t actually do anything. And, as mentioned, it`s definitely not for small hands. It`s usable for me, but I have to reach a bit.I need a vertical mouse for working from home, so it`s too much hassle to return and get a different one, but anyone buying should be aware that it`s not as advertised.

I bought this to replace a wired version of this type of mouse. It works as expected with two main caveats.1) The back and forward buttons on the side are reversed. The button closer to the user should be back, but it works as the forward button (button 5) and the one closer to the front of the mouse works as the back button (button 4). You can fix this behavior with some third party software (I'm using x-mouse), but many people won't know how to or that they can do this.2) The mouse is very light. Because it is so light and cordless it just slides around with the slightest touch. A little extra weight would really make it much easier to deal with.

This was my first vertical mouse and with light use, I loved it. But when I started using it everyday, I discovered that while it does somewhat alleviate the wrist pain I have, the stretch required to reach the scroll wheel gave me new pain. I did some more research, bought one made for small hands, and I love it. I think I'll pass this one along to someone else with bigger hands if I can find someone who is interested.

Updated:A tech-savvy coworker suggested that clicking the mouse buttons would "wake up" the optical sensor. That worked twice yesterday at work, so I don't have any complaints and upped this from 4 to 5 stars. Definitely recommend.Also, the seller did get back to me in less than 24 hours, so good on them.Been using about 3 weeks and my only real complaint is that I have a problem that at least one other buyer also experienced:The optical sensor shuts down and doesn't resume functionality until the mouse is turned off and back on using the switch at the bottom.I emailed the seller to see if they have a fix or if I'd have to request a replacement if I didn't want to do the above every once in awhile. Will update if warranted later.I feel like it was a gamble buying for ~$11 but would love if that one quirk could be fixed. This would easily be a 5-star review if I didn't have this one problem. Want to stress though that this is a minor issue, not a deal-breaker, and is really just an annoyance. Given how much time I spend at a desk, I'd definitely spend a lot more on a vertical mouse to improve ergonomics, but I'd say this is worthy buy. Also, I'd agree with reviewers who say this is for larger hands.

It's a cheap mouse for a reason.CONS:* Wireless lasts maybe 20-30 minutes before inexplicably disconnecting intermittently, making it utterly pointless* The navigate Back/Forward buttons are in reverse order (how does this make it pass design and into production?)* The navigate button placement prevents you from making a comfortably stable grip when pressing it with your thumb.* It's narrow at the base, making weight distribution unstable and prone to roll over.* Mouse wheel is a bit far out; you can scroll with your middle finger but it's a stretch to press middle mouse button with a strong enough grip. This is not designed for large hands, it's just poorly designed. Where's the disclaimer in the product description? No free passes from me, sorry.* This mouse with all its flaws is NOT ergonomic. It's a balancing act using this mouse, and it creates a weakened grip. You will end up recruiting stabilizing muscles to use it, causing INCREASED fatigue.Save your money and aggravation.

This mouse works decently. However, it really feels cheap in your hand. It's really light and feels like if it drops from your desk, it will break. The battery runs out super quickly...so, now it is basically a wired mouse, which is not what I wanted.