I got myself a Nichia NDB7875 445nm 9mm,set in a 12mm copper module with 405-G-2 glass lens. It's driven with a X-drive V6 buck set to 1.8A. Powered by 2x Tenergy 18650 3.7v 2600mAh Li-ion with protective PCB. The host is a Sky-Ray SR5. This is my 1st DIY laser,I didn't know the V6 driver needed...