− Totally Wireless freedom − 2.4GHZ GFSK technology − 34 channels in hopping with 2 group form 2.408GHZ-2.474GHZ − Optical Mouse 8-10 meter operation range − 800dpi/1200dpi/1600dpi Optical precision (press left & middle buttons at the same time to switching) − 3 level power saving mode for mouse − 3D/5KEY Optical Mouse − Low battery indicator