Bottle with reflective parabolic solar cardboard, to recharge a flashlight (removable) with 4 LEDs. At night you can turn on the torch and the light will be reflected from the plate with adjustable focus. I decided to put in the chamber, the solar panel to keep it clean and efficient, movable flashlight can be useful for other services. I understand that I deviated from the specifications required for the project, but I hope it can help someone.