DISPELS WIRELESS GAMING MYTHSSetting a new benchmark G602 redefines the laws of wireless gaming, with up to 250 hours of gaming battery life. From the pinpoint accuracy of exclusive Delta Zero sensor technology to high durability primary switches to 11 programmable controls, G602 offers true gaming performance. Count on G602 to dominate boss after boss. ENDURING BATTERY LIFEBenchmark-raising power Play with confidence. G602 sticks by you through game after game with up to 250 hours of power in Performance mode. That's as much as eight times the battery life of other wireless gaming mice, all without compromising gaming grade sensor and connection performance. G602 is powered by two standard AA batteries; optionally remove one battery to adjust its weight and balance.