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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 engraved
Packing: 1 Gift box/pc
cheapest blue voilet laser pen/purple laser pointer