405nm Blue Laser Pointer , Blue Violet Laser Pointer It is clearly among darkness, beautiful effects. cheapest and hotest Specification:Name: Blue Laser Pointer Pen,Violet Blue Laser PointerMaterial: BrassWavelength:405nmBatteries: 2 pcs AAAOutput power: 1mW-200mWColor: Black/Silver Features: Pen style, portablewell tested and high quality blue laser pointerClearly visible in the darkfixed focus, ...