Upgraded Technology. Ergonomic design, exquisite touching, rapid response, liquidly sounds, bring you a wonderful gaming feeling. 7 Grade Switchable DPI. DPI switching freely for home, office, and gaming. Professional Gaming Sensor-PMW3360. Built-in professional sensor, easy to play for all kinds of games. Comfortable Skid Resistance Side Grips. Ultra-durable pure silicone side grips deliver a solid feel and a lifetime of use.