... astronomy,indicator, Item:HL-A8011Features:*Continuous WaveBattery :1XCR2 *Name:Green Laser Pointer Dimensionφ20×130mm Technical ParameterFixed focus, green dot facula ... and working time over 8000 hours Output Wavelength532 nmOutput Power100mW( 100mw,120mw,150mw,200mw,250MW,300MW,350MW,400MW)also for clients ... including the military, medical and astronomy,indicator, teaching baton green laser pointer