This is a 15W Laser module that could give out 450nm blue laser light. Large heat sinks and cooling fan ensure better heat dissipation during work. Support continuous light output working mode and can work for long time. This module comes with power adapter for convenient use.Focal length: can be adjusted. Driving Mode: External ACC constant current drive. AC Adaptor Input Voltage: 100-240V. Lens Material: Optical glass with coating. Please wear laser goggles during usage, avoid to touch the laser directly to the eyes and skin. The laser module should works less than half an hour in one time, and. 1 x AC Adapter with US plug. The item "15WB Laser Head Engraving Module with TTL 450nm Blu-ray Wood Marking Cutting" is in sale since Thursday, April 18, 2019. This item is in the category "Business & Industrial\Printing & Graphic Arts\Screen & Specialty Printing\Engraving". The seller is "changmingmaoyi" and is located in shenzhen. This item can be shipped worldwide.