Each of our custom earbud models is designed for a specific sonic experience and is compatible with all MP3 players and smartphones. Every CIEM is lab-tested, with the results recorded for future reference in case you ever need an exact replacement. Perfect Seal offers a wide selection of earbuds in a variety of colors and styles. Customize your listening experience by choosing cable and driver options that range from super small and discreet to the standard full shell. Whether you want fixed or removable cables, or prefer single-driver to multiple-driver units, Perfect Seal has the custom earbuds you’re looking for!