DUNU DN-900 High Fidelity Ultimate Quality Dual-Hybrid IEMs Inner-Ear Earphones DN-900 uses high-floor style vocals iron unit, With a moving coil unit, Complementary use of different design elements, Enhanced low-frequency performance, IF layering make more profound, And an equilibrium state between each range With a strong sense of atmosphere low-frequency contrast, IF layered vocals more prominent, Furthermore smooth interpretation of the rich and delicate feelings. Good bass rock, pop music and other types of the human voice, Is a human voice coil orientation iron plugs The unique design ear headphones, Effectivel isolate the sound of a noisy environment 26dB.It allows you to use a lower volume in noisy environments, sound equally clear Ergonomically designed with soft silicone earbuds of various sizes, Make sure that you can wear for a long time listening to music on earphones or in sports still comfortable