LG PH450UG has a resolution of just 720p. But if you’re committed to the small form factor, the PH450UG is the way to go. The PH450UG measures just 132 x 200 x 80.5mm (W x H x D), and weighs only 1.1kg. It’s more compact than most projectors in its weight class. Its small stature makes sense because it’s also fully portable, thanks to a built-in battery which runs for around 2.5 hours when fully charged.