wireless mouse tecknet 2.4g optical mouse with usb nano receiver for notebook, pc, laptop, computer, 18 month battery life, 3 adjustable dpi levels: 2000/1500/1000 dpi (grey) tecknet <br><b>this is a new high-grade wireless mouse with 2000 dpi 3 adjustable levels 6 buttons.</b> <br>tecknet wireless mouse gives you fast data transmission and no delay or dropouts <br> <br><b>5 major features of our mice</b> <br>1. high 2000 dpi with 3 adjustable levels + 6 buttons <br>the back and forward buttons make it easier to browse the website. <br><b>note:</b>the back and forward buttons are not available for mac os; because the system itself is a closed one, not open to the public, and the other function can be used normally <br> <br>2. 2.4 g wireless transmission technology fast data transmission <br>2.4ghz wireless technology provides a powerful and reliable connection up to 33ft/10m. <br> <br>3. long battery life and energy saving <br>18 months long battery using, auto power-off in sleep mode in few minutes of inactivity <br> <br>4. low battery warning <br>the led indicator will turn red when the battery is low <br> <br>5. protable usb nano receiver <br>the usb nano receiver can be inserted inside the battery slot, allowing ease of storage when not used. <br> <br><b>how to set dpi: </b> <br>press dpi button, if the green indicator light slow flash once,then fast flah, dpi is 1000 <br>press dpi button, if the green indicator light slow flash twice,then fast flah, dpi is 1500 <br>press dpi button, if the green indicator light slow flash three times,then fast flah, dpi is 2000 <br> <br><b>package included</b> <br>- 1 * mouse <br>- 1 * nano receiver (inside the battery slot) <br>- 1 * manual