Gigabyte GM-M7600 Mouse - Optical - Wireless - Black - Radio Frequency - USB - 1600 dpi - Scroll Wheel GM-M7600 Mouse has reliable 2.4GHz Wireless transmission. Let your work more efficient. Experience perfect handle with rubber grip, especially suitable for large hands. Its nano receiver is so tiny that you can keep plugging it into your notebook even when you are on the move.