Shenzhen Usbetter Technology Co., Ltd.  

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1. Technology: Infrared. Battery: Lr44x3
2. Material: Brass          

3. Functions:
A. Laser pointer.  laser wavelength: 650nm. Laser power output: <5mw  
B. Page up/down functions.  support excel, word, powerpoint, website, acdsee and so on.          

4. Operation system: Windows98/2000/2003/XP/vista. Linus      
5. Customized logo printing and packaging services.        
6. Can bulit-in flash memory. (64MB to 4GB optional)          
7. Good equipment for multimedia teaching and meeting.