Anker is known for bargain-priced battery packs for phones, but it’s been branching out lately with a host of other gear, including this $600 Nebula Mars DLP portable projector.

Not quite as small as a “pico projector,” I like to refer to it as a home-theater-in-a-lunch-box. On top of being able to project an image up to around 150 inches, the Nebula has dual JBL speakers built into its chassis as well as a rechargeable battery that delivers up 3 hours of projection time.

Those 10-watt speakers sound much better — and play much louder — than the tiny speaker built into your typical pico projector. It’s a nice step forward for integrated audio in a projector, and that 3-hour battery life is about an hour better than most pico projectors offer.
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https://www.cnet.com/reviews/nebula-mars-portable-cinema-review/