... , high stability, long life,low price DM650D5 red dot laser module Characteriscics:High-quality laser diode,optical ... glass lens, driver circuit and housingHigh reliability, high stability, long life,low price ... ,20*80mm,26*105mmcircuit:APCFocus: fixed / adjustablematerial of module housing : cooper / aluminumSpan of Life: 8000-10000hoursSpot ...