<p>【Ultra Slim and Lightweight】Portable Design, snaps flat and slips easily into a pocket or bag. Cool power switch: Flattens for portability(power off), curve to use(power on).</p> <p>【Touch Ccroll Bar】2-way touch scrolling lets you scroll both vertically for smooth, intuitive navigation. (Note: Can't scroll left and right).</p> <p>【Auto Sleep Mode】The mouse will fall asleep after 10 minutes no-operation, it can be waken up by clicking any button. The mouse needs two pcs 1.5V AAA dry batteries to power it(Not included in the package).It is recommended to use a new battery for power supply, if the voltage is too low, the touch bar scrolls abnormally or does not work.</p> <p>【Optical Mouse】Fast tracking sensor, for smooth tracking on most surfaces, but not on glossy surfaces. Designed for use with either hand.&nbsp;</p> <p>Bluetooth connection method description:</p> <p>Put in the battery, bend the mouse, press and hold the left and right buttons at the same time for a few seconds, the mouse flashes blue light, then open the computer bluetooth search link, the bluetooth name is BT3</p> <p>Bluetooth pairing method:</p> <p>Press and hold the right button at the same time, blue light flashes after 6 seconds</p> <p>size：13*5.7*1.5CM</p>