https://www.theverge.com/circuitbreaker/2017/8/30/16224804/logitech-g603-g613-g840-mouse-keyboard-pad-wireless-ifa-2017 >Logitech has announced new entries in its popular lines of gaming mice and keyboards. The G603 is a fairly simple wireless mouse that uses Logitech's proprietary Lightspeed technology, which promises to reduce latency to a millisecond, along with a new optical sensor called Hero that's designed for power efficiency. >The G603 will come in at $69.99 upon release this month, which is cheaper than the more advanced G703 and G903 mice introduced alongside Lightspeed earlier in the year.