How much can you use "Smartphone Projector 2.0" to change smartphones to projectors at 4000 yen level? - GIGAZINE
SMARTPHONE PROJECTOR - INSTRUCTIONS on Vimeo
PRINxy Upgraded Projector 2.0 Second Generation Power-free Installation Of Small Projection Multimedia Home Theater Video Projector for Smartphone, Pad, TV Box, Laptop Brown - Walmart.com
New Portable DIY Retro Cardboard Projector Mini Projector Eco-Friendly Lightweight Mobile Phone Cinema Home Theater