Mini small portable pocket computer mouse for travel; 3.23 * 1.97 * 1.26 inch, net weight: 1.4 oz.<br> Wireless optical mouse for laptop with USB receiver, powered by 1 * AAA battery (not included), 1600 DPI, 3 buttons. The USB receiver is placed at the bottom of the mouse; to find the location of the battery, please open the top cover gently from the back.<br> 2.4 GHz fast wireless transmission, the operating distance is up to 10 meters; Compatible with Windows XP, Vista, Win 7, ME, 2000, Mac, Linux and more.<br> If you do not connect, please turn off the mouse switch, lower the USB receiver, then plug in the USB receiver and turn on the mouse switch again, press the 3 buttons (left button, right button, scroll wheel) together at the same time for about 3 to 5 seconds<br>Note: <br>1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. <br>2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you!<br>About Shipping: <br>1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly.<br>2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.<br>3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 136 hours, wish you a happy shopping!