Razer DeathAdder Essential White Edition – 6400 DPI Ergonomic Wired Gaming Mouse – RZ01-03850200-R3M1

From the manufacturer

High-Precision 6,400 DPI Optical Sensor: Offers on-the-fly sensitivity adjustment through dedicated DPI buttons (reprogrammable) for gaming and creative work
Durable Mechanical Switches: Supports up to 10 million clicks, backed by a 2 year warranty
Ridged, Rubberized Scroll Wheel for Maximum Accuracy: Small, tactile bumps increases grip and allows for more controlled scrolling in high-stakes gaming situations
5 Programmable Buttons: Allows for button remapping and assignment of complex macro functions through Razer Synapse