Laser wavelength:
red 650nm, green 520nm, blue 450nm, purple 405m
Spot size:
10 meters < 20mm
Power supply:
magnetically charged, built-in battery
Calibration distance:
0-100m
Product size:
length 54mm, width 28mm, height 23mm
Packing size:
length 96mm, width 74mm, height 46.5mm