Overview: The iPod Brick is compatible with the 3rd, 4th & 5th generation iPods, 1st, 2nd & 3rd generation iPod nanos & the iPod touch. Tiny size. Doesn't make a massive dent in your overall usage time. There's even an " Active Bass System" which promises to improve sound quality, Specification: Weight Approx:16.7g Size Approx:6.2 x 2.5 x 1.4