As gaming mice go, this one from HAVIT ticks all the usual boxes. It's a wireless mouse with a tiny USB receiver that actually fits inside the battery compartment of the mouse. This makes it extremely portable! It has adjustable DPI settings, which you can customize on the fly with a button on the top of the mouse, and it also has additional buttons that can be programmed in video games and other programs to perform certain functions.

This mouse is designed to fit your hand comfortably, with grooves for where your fingers should fit. I found it crazily comfortable, but unfortunately my husband found them to be designed poorly. His hand was too big to fit properly in the grooves, so he found himself adjusting his grip a lot. I would say this mouse is perfect for medium to small sized hands, but if you have large hands it might be uncomfortable for you.

Another minor issue is that the DPI settings are a bit on the slow side, with even the fastest setting being just a little bit slower than I like for fast-paced games.

This mouse has NO lights, unlike a lot of gaming mice you'll see. Personally I like that it means it won't distract your eye, but the downside is that there's no way of knowing what your DPI settings are short of testing them on the fly. So this mouse has a simple design that I quite liked, but it does fail to inform you of that basic information when in use.

Overall this is a good mouse with great handling and a sleek design, but if you have even slightly large hands be aware that it might give you some trouble.

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Pros
+ Easy to set up, just plug and play
+ Adjustable DPI
+ Extra mouse buttons can be programmed with different functions
+ Molded to easily fit onto your hand
+ No lights to distract your eye
+ Very comfortable on small and medium hands.

Cons
- Mouse design too small for large hands.
- DPI could have featured greater range of speeds, hard to know what speed you are on

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Note: I received this product at a discounted rate in exchange for an unbiased, honest review as provided here. As a consumer advocate, I believe in providing quality and honest feedback and receiving a product at a discounted rate will never affect my opinions.