Razer Krait Gaming Mouse 1200 Actions Per Minute :Optimized for Massively Multiplayer Online Gaming (MMORPG) / Real-Time Strategy (RTS) gaming, 1600dpi Infrared Sensor:At 1600dpi, the Razer Krait is twice as precise as conventional mice with high-performance optical sensors. The Razer Krait enables as many executable actions as possible during gameplay. On-The-Fly Sensitivity:With On-The-Fly Sensitivity adjustment, you can switch sensitivity settings right in the midst of a fierce battle!