This is 30mW 532nm Green laser module. This module can be focused by adjusting the front lens. You may also unscrew the front part and use your own len if you are going to install is into a laser pointer host. The total length of the module is 12mm X 48mm. Soldered with spring or wire for different power source. All the 30mW green laser pointer in our shop are using this module
WE TEST EACH LASER WITH METER BEFORE SENDING OUT!! POWER OF ALL LASER IS GUARANTEED WHEN YOU PURCHASE FROM LAZERER !!