In a nutshell, this is a handheld laser projector. The laser bounces off a few mirrors before passing through film of the message to be projected by a lens. Both can be repositioned to tweak size and focus.
-1 watt laser diode
-laser driver with protection (over-heat)
-rechargeable by micro usb (capacity / power)
-case cnc aluminium anodized and sanded with heatsink incorporated
-battery circuit protection
-focus lens laser
-distance 5m to 100m