Feature 1This is a 100mW laser module that could emit 405nm blue violet laser. 2Focusable design, spot size is adjustable. 3Durable copper shell for long service life. 4Support continuous laser output and can work for a long time. 5Designed for laser engraver, cutter, etc. Features: This is a 100mW laser module that could emit 405nm blue violet laser. Focusable design, spot size is adjustable. Durable copper shell for long service life. Support continuous laser output and can work for a long time. Designed for laser engraver, cutter, etc. Specification: Model: LD-F405E04 Shell material: Copper (nickel plated) Wavelength: 405nm (blue-violet) Voltage: 3-5VDC Working current: 500mA Output optical power: 100mW Wiring method: 2.1 DC socket wire (the white line is the negative pole and the socket center is the positive pole) Diameter: 12mm/0.47in Length: 45mm/1.77in Weight: Approx. 27g Package list: 1 x Laser Module 1 xBattery Box Note:This product should only be used on dark thin plastics.The laser module does not include fixing bracket or heat sink, it needs heat sink to dissipate heat for continuous operation. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }