Razer Viper 8KHz Ambidextrous Optical Gaming Mouse / True 8000 Hz Polling Rate / Focus+ 20K DPI Optical Sensor / Advanced O-Board Memory / 8 Programmable Buttons / Gaming-grade Tactile Scroll Wheel / Lightweight Ambidextrous Design / 16.8 Million Customizable Color / RZ01-03580100-R3M1 + FREE DELIVERY !