Does it really show 4K?

No. The panel is 1280x720, so 4K files are downscaled to 720p. The 4K claim refers to playing those files, not to the image you see.

Can I connect a laptop or console?

Only through USB. There is no HDMI port, so a laptop, PlayStation or Switch needs an HDMI-to-USB adapter or a streaming stick that outputs over USB.

Quite dark. Mini projectors at this level put out little light, so keep blinds closed and use a white or gray wall or screen for the best image.

It will fill a wall at a few feet away, but keep the image modest, around 60 to 80 inches, because larger sizes get dimmer and softer.

Most units in this class need mains power. Check the listing for a built-in battery before assuming it works unplugged.

Typically the projector, a power adapter, a remote and a basic manual. Cables for phones or consoles are usually not included.

At Temu, for $18.95, as of our latest check.

$18.95at TemuChecked Nov 9

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