The battery life specs are in on the new Zunes, and they match up pretty well to the latest iPods. The Zune 80 will get 30 hours on audio and 4 hours on video, and the 4 and 8GB flash Zunes will get 24 hours audio and 4 hours video. In comparison, the 80GB iPod classic has 30/5 (equal in audio, one more hour in video), and the iPod Nanos get 24/5 (again, equal in audio but one up in video). You can chalk up that slightly worse video performance to the larger screens on the Zunes—which we'd prefer over a smaller screen and slightly longer life. [Zune Insider]