It is very useful for teaching, meeting assorted PC & slide. It is wireless remote control to show the files through computer. The product had been approved by CE & FCC certification. Patent NO: 200430043979.8 China Manufacturer specifications # Laser pointer function # Page up/down function Feature # USB plug-and-play, No driver required # System: WINDOWS98/2000/ME/XP Linux & Mac OS # Infrared technology # Control distance: up to 15m # Working voltage: 3V # Sleep current: 1uA # Wavelength: 650nm # Max output: < 1mW or < 5Mw # Battery: 3 x LR44 (button cell) Certification # CE, FCC Packing # Size: H=11.9cm, =1.4cm # Manufacturer and Origin: China

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