After I get the setup working, to decrease weight, since I am using a USB cable to connect the phone to the PC, I could leave out the battery to make the phone lighter. Other items that are possible would be the protective glass (though the underlying OLED display is very fragile, so this might be a bad idea. I can also remove the excess plastic phone casing. I chose as short a focal length lens as possible while still getting decent image to decrease the "lever" effect of all the weight being in the end of the "goggles".