RF 2.4G Wireless 1200 DPI G-Laser Tracking Engine Power Saving Suitable For Right /Left HandedInvisible G-Laser engine to ensure more precise tracking Sensor: Optical RF 2.4G technology, up to 10 meters wireless range 1200 DPI solution for smoother and faster movement invisible G-laser engine to ensure more precise tracking Auto standby and deep-sleeping mode to save power symmetric shape, easy to operate by right/left-handed people.