The Logitech G309 LIGHTSPEED Wireless Gaming Mouse was designed to optimize performance in your game. This PC gaming mouse delivers advanced wireless tech and innovation for all gamers to play at their max potential. Enjoy up to 300+ hours of play with the included AA battery or unlimited battery life with POWERPLAY. The Logitech G309 LIGHTSPEED is a lightweight gaming mouse that weighs just 3 oz (86g) with the AA battery or (2.4 oz) 68g with POWERPLAY. Min limits. Max precision. Max speed. Max performance.