... the military, medical,astronomy,indicator, teaching baton. Name: Blue violet Laser Pointer Dimensionφ13×140mm QTY:50pcs MEAS:23*20*33 ... ,20mW,30mW,50mW,100mW,120mW,200mW for clients) Wave Length:405nm Working ModeCW Operating Current:I<180mA Operating Voltage:3.2V ...