It says suitable for solo 2 & 3 but don?t be fooled. That never happens for me. However, there are some serious flaws in the design. Overall quite satisfied since the repairs are pretty easy to do with super glue and some clips. perfect look for vegas pool parties. The earbud case fits perfectly inside. It is not chalky or too salty considering it has 500mg of sodium. Battery is not among the longest lasting earbuds I know, but still good enough. When you make a call it sounds like the you are muffled to the person you are talking to on the other end and may be asked to repeat yourself several times . Clean looking.