ABC Corp. Japan knows that you love to carry your music wherever you go, and this time round their Pocket Speakers could possibly see off your pair of headphones, as it can be hooked to a wide range of devices as long as they rely on the popular 3.5mm audio jack. This pocket speaker is powered by Sanyo’s eco-friendly Eneloop batteries, where a single AA battery of this amplifier can deliver an output of 0.5W × 2ch. Depending on your taste, you can pick this up in a range of colors for $22 thereabouts.