... the military, medical,astronomy,indicator, teaching baton. Name:Blue Laser Pointer Features:Continuous Wave Battery :1X18650" Dimensionφ23.5×178mm ... ,10mw,20mw,30mw,40mW,50mW(also for clients ) Beam Distance500-1500mWorking VoltageDC=4.2VTrigger VoltageDC=3.6VWorking Temperature040Storage ... Chromium(according to the request of customer)Our Blue lasers have been used in many applications and industries ...