Oman 
The Razer DeathAdder Essential is the latest version of the DeathAdder series, which has earned a reputation for offering the reliability that gamers swear by thanks to its proven durability and ergonomics. The DeathAdder Essential also has the classic ergonomic shape that has distinguished all previous representatives of the DeathAdder series. The elegant and distinctive housing offers optimal user comfort so that you can deliver top-level performance even during long gaming marathons. Five independently programmable Hyperesponse buttons offer even more control and a noticeable competitive advantage, and the optical sensor with up to 6,400 dpi ensures fast and precise mouse movements. Razer's multi-award-winning mechanical switches are characterized by extreme reliability and an even longer service life of up to 10 million clicks.