Etekcity Scroll T-142 4000 DPI High Precision 6 Programmable Buttions USB Wired Optical Computer Gaming Mouse for Windows and Mac (Certified Refurbished) This Certified Refurbished product is tested & certified by Etekcity to look and work like-new. The product includes all original accessories, and is backed by a 90-day warranty Fully rubberized finish Features, ergonomic design increases comfort for enhanced gaming performance High-resolution sensor ensures responsiveness and accuracy - high-quality switches create unsurpassed tactile feedback and speed with firm and crisp clicks Supports up to 1000Hz polling rate and 4000 DPI sensitivity, letting you use the sensitivity that best meets your needs Store up to five ready-to-play profiles