With PowerPlay wireless charging, you won't ever have to worry about running out of battery. To keep your G502 Lightspeed Wireless Mouse and other compatible G mice charged while playing and relaxing, add the power play wireless charging system. * *A separate Powerplay wireless charging system is available for purchase. Wireless gaming mouse with light speed: Pro gamers use the exclusive Logitech G ultra-fast wireless technology in competitions all over the world. The next-generation Hero 16K sensor is Logitech's most precise sensor to date, capable of reaching 16,000 DPI for the highest possible gaming speed, accuracy, and responsiveness over the whole DPI range. Eleven programmable buttons and a lightning-fast scroll wheel: Using the Logitech G hub software, give each game's buttons unique macro and shortcut commands. Use extremely quick scrolling to quickly go over menus, lengthy webpages, and