Focusable Dot 450nm 500mW Blue Laser Diode Module 3-5V 12x45mm
1x 450nm 500mw Dot Laser Diode Module. Wavelength: 450nm. Focusable: Yes. Output Power: ＜500mW. Laser Shape: Dot. Red wire is connected to positive pole "+‘’, black wire is connected to negative "-".