· Max Precision: HERO 25K sensor tracks exactly to the sub-micron with zero smoothing for precise wireless gaming· Minimal Charging: 300+ hours with AA battery or unlimited battery life with POWERPLAY, so you can focus on the game, not your battery life· Max Speed: LIGHTFORCE optical-mechanical switches with optical speed, mechanical feel, and optimized gaming performance· Max Play: Switch between the robust yet low latency LIGHTSPEED wireless and Bluetooth connectivity, offering total wireless flexibility· Logitech G309 LIGHTSPEED is a lightweight gaming mouse with a minimum weight of just 86 g with the included AA battery or 68 g (battery-free) with POWERPLAY.