The title of the video is 74W Laser, which casts a laser beam into the dark.
At the beginning of the video, the camera was shooting with the lens cap on.
The screen is shown dark for a while, but it will be displayed after a while.
It took me 5 months to complete my 74W laser.
I was finally able to complete it.
The body was made with a 3D printer.
I designed, printed, and produced everything myself.
YOUTUBE is in Japanese.
Thank you for watching.
I have been communicating with trinh by email until recently, but I have been having a lot of trouble with him.
He probably won't do laser trading.
He didn't even send me the product I ordered, so I refunded my money.