World’s No.1 Best Selling Wireless Gaming Gear Brand - Based on independent aggregated sales data (FEB ‘19 - FEB’20) of Wireless Gaming Keyboard, Mice, & PC Headset in units from: US, CA, CN, JP, KR, TW, TH, ID, DE, FR, RU, UK, SE, TR Next-gen 12,000 DPI HERO optical sensor delivers unrivaled gaming performance, accuracy and power efficiency Advanced Lightspeed wireless gaming mouse for super-fast 1 ms response time and faster than wired performance Ultra-long battery life gives you up to 250 hours of continuous gaming on a single AA battery. System Requirements-Windows 7 or later, macOS 10.11 or later, Chrome OS Lightweight mechanical design and classic shape for maximum maneuverability, durability and comfort Compact, portable design with convenient built-in storage for included USB wireless receiver. Max. speed: > 400 IPS Note : In case of wireless mouse, the USB receiver will be provided inside or along with the mouse 2-year limited hardware warranty