◆Technology:Radio Frequence                                                                                                                                                ◆Fucnction:Red Laser pointer ,Slide forward and back,Black screen,Launch slide show.
◆Wavelength:650nm
◆Laser distance:more than 200m
◆Control Distance:12m~20m
◆Battery:AAA* 2                                            
◆Bult-in Flash memory:option
◆USB plug-and-play,No driver required