50mW blue voilet laser pointer Material: Brass New Blue Laser Light Wavelength: 405nm 1mW,5mW.10mW,30mW,50mW,100mW, 200mW.. 50mW blue voilet laser pointer/blue laser pointer/purple laser pointer pen Size:145*15(Dia)mm Batteries: 2pcs AAA Material: Brass Color:Black Output Power:1-300mW(1mW,5mW,10mW,30mW,50mW,100mW,200mW.....) Wavelength:405nm Logo: print or engravedPacking: 1 Gift box/pc