Product details:

Bring your gaming up to the next level with this Razer Naga X mouse. Optical technology means it'll glide with smooth and precise movement, which is exactly what you want when there's no room for error. You can adjust the DPI settings on it too, to make it more sensitive depending on your style of gaming and what title you're in. Those hits will be really accurate. There are a massive 16 programmable buttons on this piece of kit too, made possible by the number pad on the side. The control is completely in your hands as you assign certain commands to each of them. And if all that wasn't enough, it has RGB lighting that can be customised to really set the mood for each session.Black 16 Programmable buttons 85g.
Midweight ergonomic design 2nd-gen razer optical mouse switches.
Razer 5g advanced optical sensor Ergonomic MMO Gaming Mouse with 16 buttons.
The Razer Naga X MMO Gaming Mouse features a midweight ergonomic design.