Apple introduced the Generation 2 iPod shuffle in September 2006 and advertised it as “the most wearable iPod ever,” due to a clip on the back that could easily attach the iPod shuffle to clothing.
The iPod shuffle was so small that the 30-pin iPod dock could not be used to charge or transfer music and data to the device. Instead, the Generation 2 iPod shuffle used this iPod shuffle Dock. The dock connected to a computer with an attached USB cable and data transfer and recharging was handled through the dock’s headphone jack.
The iPod shuffle Dock was only available in white, even though the iPod shuffle was available in several colors [silver, two variations of pink, orange, green, and blue; and turquoise, lavender, mint green, and (PRODUCT)RED].
Source: Wikipedia
