http://www.pcgamer.com/logitech-launches-high-end-wireless-mechanical-gaming-keyboard-and-mouse/

Wireless gaming peripherals are often met with grains of skepticism. Because they ditch the cord, gamers are worried that the possibility of latency can affect performance. The belief was imbued into gamers very long ago, but wireless connectivity has improved drastically since then, and Logitech believes it’s finally time to put the myth to rest.

The Logitech G603 gaming mouse and G613 mechanical gaming keyboard both have the aim of providing the same gaming experience as wired peripherals. To do so, they use Logitech’s proprietary Lightspeed wireless connectivity to limit latency to just 1ms. As an added bonus, they also support Bluetooth connectivity for extended battery life.