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 continue to work when it cool down please.1 x AC Adapter with US plug. Please Make sure it's 100% right. Please leave note for your special request e. But the items must be back in factory condition.
If is item is defective in 12 months, you can return it to us. We will send you a new replacement after receiving the defective item.