This Esperanza Optical Mouse will be your best companion for all your computing needs.The mini wireless receiver can be stored in the mouse to prevent loss, and it is convenient for use during traveling.
Specification800/1200/1600DPI resolutionRadio Frequency: 2402MHz-2480MHzRange: 10mPowered by AAA*2 batteries(battery not included)Receiver interface type: USB 2.0Power saving module designedSystem compliance: Windows 98/Me/2000/XP/Vista/7, Mac OS 8.6 and above.