Features: Innovative mini pen-style mouse provides accurate and easy control of the mouse cursor. 2.4GHz wireless connection, up to 10m operation distance. Adjustable 500/1200 DPI optical sensor for smooth movement control. Power saving: if there is no 2.4GHz signal, it will automatically power off. Pen shaped, especially suitable for handwriting input. Real Plug and Play, no extra driver needed. Low voltage alarm function, reminds you to replace battery in time. Designed with a wheel for page turning during PPT presentation. Specifications: Color: Red/Blue/Grey Tracing system: optical Operation frequency: 2.4GHz ~ 2.483GHz Operation distance: up to 10 meters, 360 Resolution adjustable: 800/1200DPI Operating current: 15mA System requirement: Windows 2000/XP/Vista/7, Linux, Mac OS, Android OS (with standard USB interface) Battery type: 1 * AAA Battery (not included) Specifications: Wireless Pen Mouse Handwriting Mini Mice Package Included: 1*mouse 1*receiver 1*mount 1*instruction