DuoFinity Pairs Noninterrupted Wireless Earbuds are for those busy and productive teams that appreciate the gift of having one less thing to worry about. Duofinity is a cradle case that stores two sets of earbuds for end-to-end enjoyment. It allows you to switch earbud pairs, so you don't have to interrupt your productive day. Simply store one pair at one side of the case and pull out a recharged pair from the other as needed. It's as easy as that.