At first I wanted to use monsters.The theme is mini Bluetooth projector, and unconsciously it is a rocket shape that is well known to the public. I haven't used a mini projector. I don't know much about its structure, and I hope I can give reasonable opinions.

In the rocketA Launch switch is set on the back of the projector as the key to the operation of the projector. The small pulley on the left is a volume regulator. I think I can experience it if I have used a repeater or the like.