High-quality laser diode,optical glass lens, driver circuit and housing High reliability, ... low price DM650D1 Red Laser Module Characteriscics:High-quality laser diode,optical glass lens, driver circuit and housingHigh reliability, high ... -10000hoursSpot diamension: 0.5mm (thinnest) Characteriscics:High-quality laser diode,optical glass lens, driver circuit and housingHigh reliability, high stability ...