Under the case is an informative user manual covering how to insert the IEMs, what the accessories are for, and other information that will be useful to those new to IEMs.Speaking of the accessories, the A161p come with 3 sets of mushroom tips (S/M/L), 1 set of double-flanged tips, 2 pairs of triple flanged tips, cable guides, TRRS adaptor, headset to PC adaptor (to use this as a mic on your compu