- Cresyn C520S high quality with beautiful and rich sound.

- 8.8-mm speakers with neodymium magnets. Two-tone design with a metal insert feature

- Cresyn C520S is a control button to answer calls and switch tracks and a highly sensitive non-directional microphone

- set of stereo headphones with a soft protective cover and 4 pairs of nozzles of different sizes

- Type Open, dynamic, intracanal