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I don't know how the new Vivitar DVR 150's quality will stack up against the Flip, but being waterproof down to 16 feet and having infrared night vision is a promising start. At least, for amateur submarine night porn filmmakers.
The Vivitar DVR 150 has a 1.8-inch LCD screen, 2GB of built-in memory expandable using Secure Digital cards, USB male prong built-in, TV out, webcam mode, and comes in four different colors for $50. [Vivitar via ChipChick]
