Gigabyte GM-M8600 Aivia Wireless Laser Macro Gaming Mouse GamePlay Wireless Technology - over 50 hours battery life during intense gaming operation. Quick-Swap battery system - instant battery changing under 2 seconds. 2 Hi capacity Li-Ion Batteries for over 100 hours of non-stop gaming use. 32KB onboard memory enables up to 5 programmable profile settings featuring on the fly profile switch capability for the most versatile gaming experience. Dual Wired / Wireless mode with functionality-switch for absolute no downtime during frenzied gaming sessions. Advanced GHOST Macro Engine enables editing and storing of up to 70 Macros. Twin-Eye Gaming Laser Engine up to 6500dpi