Violet Purple Blue Laser Pointer Pen: 1. Halfsteel Mid-Open 2. 100mW 405nm Halfsteel Mid-Open Violet Purple Blue Laser Pointer Pen (2 x AAA Batteries): 100mW 405nmManufacturer Specifications:100% brand new and never used Made of high quality and durable material Compact design and lightweight Better visibility and better penetrability Output Power: 100mW Working Voltage: DC 3V Wave Length: 405nm ...
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