Deathadder mouse (Razer brand is to recall a brand recognized in the field of gaming), is a very good product for its price. First, comfort is incredible. A you to test if it suits you, but you can play or use your favorite logicels for hours without worry. The mouse is a really bluffing accuracy, even with a suitable mouse pad (steelseries QcK ...). FPS Players will appreciate the precision! Playing mainly sniper, the change has been really beneficial. The backlight is pretty nice, coupled with a Deathstalker keyboard is even better. The first few days, if you never use a mouse in this range, you will feel the difference! The Razer package is still sufficiently comprehensive with some useful information about the brand ...
In short a very good mouse that is a treat to use everyday and I can not recommend.