10mm Bass Dynamic Driver+7.8mm Mid amp;High Dynamic Drivers Double the number, double the power. With two dynamic drivers, the sound of Khan precedes any ordinary dynamic IEM. Its big 10mm driver contributes to the warm and immersive low-to-middle frequency while the medium 7.8mm diaphragm adds airy treble to the plate. Great with Mobile, Superb with Amplifier With mobile never out of our site, the IEM you are looking for should work well with your phone. Luckily, Khan has a low impedance of only 10, so even mobile devices like phones or MP3 can power it well. And the sensitivity of Khan can reach as high as 117+3dB, letting you savor every detail in your favorite song. 4th Gen DLP-3D Exquisite Production The materials and technology used for Khan are unthinkable compared to its peers. To give you the purest natural music, 4th generation industry-level DLP-3D printing is adapted to make the acoustic conduits in greater precision. Ergonomic Design in Glorious Shell The other criterion of being mobile is easy and comfortable to wear, which Khan passes easily with its 6.8g weight and ergonomic shape. Moreover, it is eye-attracting in high-tech style with a case carved like dragon scales and covered by resin. You will not only get warm and immersive high-quality music with Khan but a nice ear decoration as well. Specification: Model: QKZ x HBB Khan Drivers: 10mm dynamic driver + 7.8mm dynamic driver Sensitivity: 117dB3dB Frequency Range: 20-39500Hz Impedance: 1015% Connector: Recessed 0.75mm 2pin Cable Plug: 3.5mm Cable Material: Oxygen-free copper Cable Length: 1.2m Free: Earphone Pouch CSI Zone