This is the new Nebula Mars 3 from Anker. It's an outdoor portable projector with 185Wh built-in battery. It's bright, vivid, 1080p. The built-in battery lasts approx. 5 hours of playtime, built-in speakers, waterproof, dust-proof, and ultra portable.
Big thanks to Anker for sponsoring this video: "From June 13 to July 3, you can enjoy the a discount of $200 off for the whole year through $1 early bird, and enjoy the new projection experience brought by Mars 3 in advance."