First custom earphone in the world with a single 14mm dynamic driver couples with advanced frequency suppression technology (FST). Frequency Response: 10-20000 Hz Impedance：16ohms（including cable） Sensitivity (at 1kHz)：116dB spl (1mW) Important: Due to the size of the driver, people with small ears may not be able to fit. We would need your ear impressions to check for sizes...
“Disclaimer Please note that I am not affiliated with Xiaomi in any way, though you could consider me an "endorser" of this product. I was neither paid nor given a review sample by Xiaomi; this pair was purchased personally. Also, do take note that most of the review is my personal opinion, and it should be treated as such; also, the impressions from this review can and will change, so...” --thatBeatsguy