laser presenter

GC004: remote control technology: infrared remote control technology (to be certain angle R) remote control distance: laser range greater than 15 m: more than 200 m wavelengths: 650 nm material: rubber quality specifications: φ15 × 165mm batteries: the use of two receivers on the 7th battery : Black (radio receiver) computer interface: USB interface, plug and play, not only applicable to the driver WINDOWS98/2000/ME/XP various functions: laser instructions, wireless remote control up / down over Page features: a blank screen button