Pictek PPC015B-PTUSV 2.4G Wireless Mouse Pictek Mobile Optical Mouse Computer Mice with 6 Buttons, Nano Receiver ,15 Months Battery Life,2400 DPI 5 Adjustable Levels, Red Sale Price: $13.99 + Free Shipping! Original Price: $21 Only 5 left in stock5 DPI switch and customized function: no need any driver, plug and play2.4G wireless transmissionUp to 15 months of battery life virtually eliminates the need to change batteriesFeatures a battery level indicator, when power levels are running low, CPI will blink for a bitFor windows mac and Linux Product Description Features reliability, ease-of-use and user comfort, this wireless mouse gives you fast data transmission and no delay or dropouts. 5 DPI Switch. Select your preferred cursor speed, 2400/2000/1600/1200/800 CPI. Wide Compatibility: Compatible with most system including Windows, Mac and Linux. Energy-saving: If mouse is not used for over 8 minutes, it will turn to power saving mode to save energy. 2.4 G Wireless Transmission Technology. Enjoy the fast data transmission at the convenience of the wireless technology. Compact Receiver: The wireless tiny receiver can be inserted into the slot next to the battery slot, allowing ease of storage when not used. Hand-Friendly Design With special processing and advanced material, this wireless mouse makes you feel comfortable. How to set CPI: Press CPI button, if the red indicator light flashes once, its CPI is 800. Press CPI button, if the red indicator light flashes twice, its CPI is 1200. Press CPI button, if the red indicator light flashes three times, its CPI is 1600. Press CPI button, if the red indicator light flashes four times, its CPI is 2000. Press CPI button, if the red indicator light flashes five times, its CPI is 2400. Warranty: At Pictek, not only we offer high quality products, we back them up with 12-month warranty. Specification: Mouse size: 4.22 x 2.44 x 1.58in (L x W x H). Keys Quantity: 6 Buttons. DPI: 800, 1200, 1600, 2000, 2400. Power Source: 1 x PCS AA Battery (Not included). Package included: 1 X wireless mouse. 1 X USB receiver.