The Sony MDR-EX155AP is a set of comfortable, lightweight in-ear earbuds. The neodymium drivers of 9 mm provide a dynamic sound. These headphones are equipped with comfortable, close-fitting silicone earbuds that allow you to enjoy the music even more and avoid the noise around you.
The UiiSii HM9 has Dynamic Drivers of 10mm in size. This provides a high frequency range, for very deep tones, as well as refined and well-balanced mids and highs, so you can perfectly distinguish each instrument.