Etekcity Scroll R1 1800 DPI USB Wired Ergonomic Optical Gaming Mouse with 6 Programmable Buttons, PRO-AIM Gaming Sensor, Built-weight Iron, Ergonomic Design PRO-AIM gaming sensors with high-end 6.4 million pixel sensor can achieve maximum acceleration of 20G easily. 1 millisecond response time makes you seckill opponents easily Ergonomically design and lightweight minimize hand fatigue for all-day comfort and control Customizable back/forward thumb buttons will perform back and forward functions for use in a web browser or file explorer Adjustable DPI with 3 sensitivity modes. Press the DPI button on the top of the mouse to switch between sensitivity modes Gold-plated copper braided wire offers stretch resistance and durable use; Anti-Skid Rubber coating provides comfortable gaming experience