... 4000Hrs in normal use condition 4. Light shape is in B grade Applications:1,Laser pointer2,Industrial laser marker / measuing instrument3 ... per month.The wavelength for the laser diode have below series: 635nm650 nm,660 nm,780 nm,808 nm, 830 nm ... ,The power from 1mW to 500MW laser diode IDL-65052-B