KZ ZST Circle Iron In-ear Mega Bass MP3 Dual Unit Earphone without Microphone Mini Speaker Flip cover design makes it

Flip cover design makes it easier to work

69inch * 17

Fits tightly to the body without falling off

Clear image view and easily control underwater

If the bluetooth mode is low on power

KZ ZST Circle Iron In-ear Mega Bass MP3 Dual Unit Earphone without Microphone Mini Speaker Flip cover design makes it1. The high pitched moving iron unit + the mid bass moving coil unit complements the sounding advantages of the moving iron unit and the moving coil unit, giving the music a richer detail. 2. The performance of the unit is strong, with a four layer voice coil to bring a stronger driving force, and the low frequency shock is powerful, making the overall listening feeling more appealing. 3. The treble moving iron unit has the high pitched performance