The Razer Deathadder Essential features a true 6,400 DPI optical sensor with a proven history of performance for fast and precise swipes. This gives you smooth and seamless control in the face of a chaotic battle. The ergonomic form provides a comfortable fit for your hands, so you’ll never falter in the heat of battle during long hours of gameplay. The Razer Deathadder Essential is designed with high durability to maintain exceptional performance quality through intense gaming sessions. Its 5 Hyperesponse buttons have been laboratory tested for up to 10 million clicks to ensure that this is the last mouse standing in battle.