亮度最高的激光指示器

This economically priced green laser pointer is perfect for boardroom and classroom presentations. The 532nm wavelength is at the peak sensitivity of the human eye, yielding an exceptionally bright green beam. The advanced frequency doubled diode ensures hundreds of hours of reliable use. The slim, sleek pointer conveniently operates on 2 included standard AAA batteries and includes a black metal case for maximum protection and durability.