The yocto is the smallest possible iPod: any smaller iPod wouldn’t make sense physically. It is based on yoctotechnology, which is smaller than nanotechnology. Its width and length are physically impossible to measure simultaneously, and it is the first known digital audio player to weigh less than air. We cannot properly say the universe began until one iPod yocto had been manufactured. The iPod yocto was launched under the slogan "You have got to be kidding me... No seriously we have a lot of time on our hands" It was launched in two colors: burnt sienna and mustard.