The gang over at ifixit have taken Apple’s newest iPod Shuffle and given it a proper tear down. The fourth-generation Shuffle doesn’t contain any mysterious secrets — we’re not sure there is room for them — but the site does list a 51 mAh battery, logic board, click-wheel, and casing. It is pretty remarkable that a 51 mAh battery can last for 15 hours; most smartphone batteries — powering a screen — start at 1,000 mAhs. The site does say that in order to get inside the device you basically have to break it; making self-repair an interesting proposition. Hit the jump to see the tear-down in its full glory.