green dot laser module type : dd532-5-5 main technical parameters: size :20mm x 59mm circuit board : 35mm x 35mm wavelength : 532nm operating voltage : dc 5v operating current : less than300ma divergence : 0.5mrad output aperture : dia5mm output power : 5mw operating distance : 50m optics : glass lens both sides ar coated crystal : nd : yvo4 and ktp beam mode : tem00 , continuous output wire length : 2 x 250mm(or connector wire and plugs) operating temperature : 15 celsius degree -30 celsius degree warm-up time : less than15 mins stability :20%@ 15 celsius degree -30 celsius degree life time :more than 5000 hours accessories choose and buy : lps-4 power supply