6 Button Mouse: Optical Sensor And Switchable Resolution (1000/1600/2400 Dpi) Nano Usb Receiver: Can Be Permanently Plugged Into The Notebook Long Battery Life Thanks To Energy-Saving Optical Sensors Optimised For Right- And Left-Handed Users Elegant Touch Thanks To Chrome-Plated Scroll Wheel With Non-Slip Rubber Coating 6 Button Mouse: Optical Sensor And Switchable Resolution (1000/1600/2400 Dpi),Note : In Case Of Wireless Mouse, The Usb Receiver Will Be Provided Inside Or Along With The Mouse Brand Original High Quality Ideal for home and office use General Cleaning A little goes a long way