This video and related article from TrustedReviews.com provides a thorough rundown on features of the Flip Ultra.

Tara Wisnewski — Sep 08, 2008 — compares two popular web-friendly camcorders: the Sony NSC-GC1 and the Pure Digital Flip Video Ultra, based on ease of recording, quality of the video, video recording options, and ease of uploading to a computer or website