For what you get, it's worth the price. It has functions that should really be 10x the price.The build: cheap porous plastic that feels smooth, but tactile. I actually prefer this feeling because the gritty surface gives me a tactile feel. It's like late 90's mice. If you remember those, you might like how it feels. Smooth plastic isn't for me because my fingers easily slip off. Clicks are satisfying, however. Those are substantial with a nice membrane feel.Software: To customize scroll speed, hot key functions for left, middle and right click; dpi loop, forward and back buttons, click speed/delay, and cursor speed you need to download the driver which is a link in the user manual. These are all live and you can see the speed of each function in real time. There's also an office and game mode where you can save settings.RGB function: It has 7 modes you can switch betweenn by holding left click and dpi button. To customize brightness and light pulse speeds you need the software which is a link in the user manual. The software is slow to change. It's faster to change modes by left clicking and dpi. You can also customize the colors to your preference with the color wheel on 1-6 of the DPI flat color profiles. You can get exactly what color you want like a colorwheel in photoshop. 7 modes : DPI color (toggles between one flat color, ex: toggle for red and it stays red), colorful light (think northern lights/aurora borealis), neon (solid color transitions), dynamic zone (colors travel through the mouse similar to colorful light without randomized colors), waltz (laggy version of dynamic zone) and 4 seasons (switches between all modes at random).Ergonomics: fits nicely in hand. Fingers rest nicely as well as the palm. For smaller sized hands, it may be a problem. Larger hands like quarter backs might have thumb and pinky slippage.Overall, for the price, it's unbeatable. Durability and longevity is the question. I'll update long term