The best tech products announced this week include LG's affordable 4K TVs and Audioengine's standout desktop speakers.

The Alogic Clarity 5K Touch 27-inch monitor is priced at $1,599, $200 more than the 4K Touch model (which features a webcam).

It's a win-win, and it's why everything on iStock is only available royalty-free — including all 4K Resolution images and footage. What kinds of royalty-free files are available on iStock? How can you ...

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