Description:<br />5 DPI switch : no need any driver・ plug and play. 5 DPI switch ( 800・ 1200・ 1600・ 2000・ 2400 ) to change the speed of mouse freely. <br /><br />2.4G wireless transmission: 2.4GHz Wireless - A more secure and precise experience than the traditional FM radio system with an increased working distance of up to 15m<br /><br />Long battery life and auto energy-saving sleeping mode: Up to 15 months of battery life virtually eliminates the need to change batteries. Battery life may vary based on user and computing conditions. The Auto Switch Off function will help you save energy as your Wireless Mouse will switch off when your PC is turned off or the receiver is disconnected.<br /><br />Feel-good design: Contoured shape and textured rubber grips keep your hand comfortable even after long hours・ USB Nano Receiver which can be stored within the back of the mouse.<br /><br />For Windows・ Mac and Linux: Reliable wireless connection with Nano-receiver that can stay in your laptop<br /><br />Specification:<br />Color: black<br />Mouse size: 103.5X 70.5 X 38.6mm<br />Number of the Key: 6 Buttons<br />DPI: 800-1200-1600-2000-2400<br />Applicable Person: Professional Game Player/Game Fancier/Office<br /><br />How to set CPI:<br />Press CPI button・ if the red indicator light flashes once・ its CPI is 800<br />Press CPI button・ if the red indicator light flashes twice・ its CPI is 1200<br />Press CPI button・ if the red indicator light flashes three times・ i