BenQ Zowie EC2-CW Wireless Gaming Mouse – Medium – Shape: Asymmetrical Ergonomic Design – Grip Style: Claw, Palm – Sensor: 3370 sensor – DPI: Up to 3200 – Polling Rate: 125/500/1000Hz – Buttons: 5 – Connectivity: USB 3.0, Wireless – 24-Step Scroll Wheel – EC2-CW