Description: The innovative mini pen-style mouse provides accurate and easy control of the mouse cursor, wireless mouse, up to 10m effective distance. Adjustable 800/1200/1600DPI optical sensor for smooth movement control, it is designed to fit comfortably on your hand. Real plug and play, no extra driver needed. Designed with a wheel for page turning during PPT presentation. Easy to Use: Good for use in limited space or unusual places where a normal mouse is a bit bull to use, fits comfortably in the hand, button placement for left and right mouse clicks are in good placements for easy clicks. System requirement: Android OS, Windows7/8/Vista/XP/2000, Linux (with standard USB interface). Specification: Material: Plastic Size: 145x20x10mm / 5.71x0.79x0.39inch 3-DPI: 800/1200/1600DPI Current: 1.5V 15mA Battery type: 1.5V Battery. (Battery not included, For safe transportation, will remove the battery.) Channels: 16, channel-hopping automatically Working voltage: 5V Working current: 15mA Tracing system: Optical Support system: Windows 2000/XP/Vista/7, Android, etc Applications: PC, Smart TV Package Includes: 1 Piece Optical USB Wireless Pen Mouse 1 Piece USB Receiver 1 Piece Plastic Sleeve 1 Piece User Manual Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.