LINGSFIRE Ultra Thin 2.4GHz USB Wireless Optical Cordless Mouse with DPI Switch for PC Laptop Desktop (Red) Nano Receiver : Small enough to plug in once and leave connected. Working range within 10 meters (30 Feet) Wireless : Plug in nano receiver and go wireless. 2.4GHz reliability and performance. Nano Slot : Convenient nano receiver storage for when you need it.Comfort Grip : Smooth, rubberized grip designed for comfort and control. Compatible with ,Windows XP / VISTA / Win7 / Win8 / MAC