Wireless Optical Pen Mouse Mobile Handwriting Mice 2.4GHz with USB Receiver for Web Scrolling PC Computer Laptop Notebook Macbook (Touch Pen Mouse) Mini Wireless Optical Mouse Pen : Provides accurate and easy control of the mouse cursor. 2.4GHz Wireless Connection : Up to 10meter/33ft operation distance. Adjustable 800/1200/1600 DPI optical sensor for smooth movement control. Power Saving: Automatically power off if there is no 2.4GHz signal. if not use it for a while, the wireless optical pen mouse will in power saving model. Real Plug and Play, Easy To Use: The pen mouse no extra driver needed, even small kids can operation it. Pen shaped, especially suitable for handwriting input. Low voltage alarm function, reminds you to replace battery in time. Designed with a wheel for page turning during PPT presentation.