This is the BenQ MH550 projector.

This is a BenQ projector boasting vivid picture quality. Resolution: Full-HD (1920x1080) Brightness: 3,500 lumens This is a high-end product among projectors. Currently, the lowest price online is 700,000 won. It has been used carefully and is in excellent condition. If you purchase, I will give you a Britz speaker for free (worth 100,000 won).