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Focusable 515nm 520nm 50mw Green Diode Laser Dot Line Cross Module With Heatsink 3V-5V 12x45mmFeature: Wavelength: 515nm 520nm Output power: 50mW operating voltage: 3V -5V Working temperature: 15℃~40℃ Laser Shape:Dot/Line/Cross Focusable:Yes Material:Aluminium Duty Cycle:45 seconds on,15 seconds off Dimension: 12x45mm Please hold far from direct eye contact to the laser Package include: 1pc 515nm 50mw laser Dot module 1pc Line caps 1pc Cross 1pc 12mm Heatsink