2.4GHz wireless optical mouse with portable nano receiver Stable and no latency connection, no interference 5 buttons with optional driver for programmable buttons Works 10- meter range, no cord design eliminates cord tangles on your desktop Easy to set up and use without any angel or direction limits With 800DPI high resolution Frequency: 2.4GHz Ergonomic design Non-slip grips on both sides of the mouse reducing the chance of slips Color: in rubber black color A slot in mouse to house the USB receiver, carrying the mouse around easily Rubber coating finishing Operation system: Microsoft Windows 98SE, Me, 2000, XP, Vista The wireless connection is made automatically portable nano receiver plug-and-stay nano receiver is so small that you plug it once and leave it in PC and MAC compatible