... :AAA*2pcsBeam diameter:1.5mmClass:IIIB Fixed focus, green dot facula, continuous output, and working time over 8,000 ... 3.2V DC Trigger voltage: 2.8V DC Appearance and color: black Features: continuous wave Battery: 2 x AAA (included) Dimension: ... Can be used in many applications and industries including the military, medical and astronomy, indicator, and teaching baton 2 in 1 laser pointer keychaiin ...