TheRazer Imperator Ergonomic Laser Gaming Mouse is not just a mere mouse, it is an extension of your hands. The Razer Imperator Ergonomic Laser Gaming Mouses right-handed ergonomic form factor with a contoured thumb grip delivers comfort and a better fit for gaming, whether you use a palm or fingertip grip. Be empowered to take on foes and fatigue alike - for longer gaming sessions without strain. When every aspect of your game matters, customize your game play with the unique adjustable side buttons on the Razer Imperator Ergonomic Laser Gaming Mouse, giving you optimum reach for easier access to mission critical keys and macros.