2.4GHz Wireless Optical Pen Mouse Adjustable 500/1000DPI for PC Android Gray 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 500/1000 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: black + gray Tracing system: optical Operation frequency: 2.4GHz ~ 2.483GHz Operation distance: up to 10 meters, 360° Resolution adjustable: 500/1000cpi 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) Item size: approx. 14 * 2.3 * 1.5cm / 5.5 * 0.9 * 0.6in Package size: 18 * 12 * 4.5cm / 7.1 * 4.7 * 1.8in Package weight: 96g / 3.4oz Package included: 1 * Pen Mouse 1 * USB 2.4GHz Receiver 1 * Mount 1* Micro to USB Adapter 1* Type-C to USB Adapter 1* User Manual