the laser's adjustable feature allows you to adjust the focus of the laser pointer to get the ideal beam for the distance you are projecting. just turn the ring on the front of the pointer. at short distances, a few feet or less, you can project a remarkably sharp and bright beam.
product name:adjustable focus green laser pointer with on/off button. model no.jl-064 battery :1x"cr123a" . size:22*110mm. laser type:visible laser diode visible green dot and green beam at night and in lighted area. continuous wave. wavelength:532nm.
output power(mw):30mw,50mw,100mw,150mw,200mw. technical parameter: adjustable focus, green dot facula, continuous output and working time over 5000 hours blue high-brightness led work instructions working voltage:dc=4.2v trigger voltage:dc=3.6v working temperature:0-40 storage temperature:-10-50 appearance and color: black