Kube MP3 player is probably made to set a world record - The smallest mp3 ever created. Not sure though if this is the smallest, but it could be since it’s just 1″ tall and weighs just 18 grams. It’s unbelievable how it can have a storage of 2GB with and a bulit in charger. I features 6+ hours continuous playtime on one charge, USB cable (for charging), and is available in different colorways. $35.