The #1 Best-Selling Gaming Peripherals Manufacturer in the US: Source - The NPD Group, Inc., U.S. Retail Tracking Service, Gaming Designed: Keyboards, Mice, PC Headsets, and PC Microphones, Based on dollar sales, Jan. 2017- June 2020 combined. Ultra-Fast Razer HyperSpeed Wireless Technology: Faster than wired gaming mice Focus+ 20K Optical Sensor: Cutting-edge precision 78g Lightweight - Designed for Esports: For swifter, controlled swipes Optical Mouse Switch: Actuation at the speed of light