HERO sensor - The next generation HERO sensor offers up to 10 times higher energy efficiency than previous generations. This optical sensor is extremely precise and fast with an accuracy of 400 IPS and a sensitivity of up to 12,000 DPI. The extremely fast wireless LIGHTSPEED technology ensures a delay-free gaming experience. The G305 impresses with an incredible response time and reliability with a super-fast signal rate of 1 millisecond for tournament-ready performance. Ultra-long battery life - Play at maximum power without worrying about power loss. The G305 delivers an incredible 250 hours of gaming in performance mode with a single AA battery. Wireless does not necessarily mean high weight. The G305 has a low weight to ensure high manoeuvrability: thanks to its efficient mechanical design and energy efficiency, it weighs only 99 grams. The rugged, compact design with integrated storage compartment for the nano receiver makes the G305 not only a great desktop mouse, but also a great companion on the go.