Created and Trusted by Professionals Razer, in close collaboration with professional gamers, has developed a mouse optimized for claw or fingertip grip. Their expert feedback and experience have been combined to bring you a mouse that precisely matches your demands and preferences. Best Precision The Razer Focus Pro 30K Optical Sensor offers the best precision that surpasses all others. With its intelligent features, you can precisely adjust and control mouse sensitivity to perfectly match your gaming style.