The HD Hybrid driver system combines a 9mm high sensitivity dynamic driver and a Balanced Armature driver. Combining these two drivers reproduces a full spectrum of sound from heavy deep bass to clear and vivid high frequency notes.A high sensitivity 9mm dynamic driver lets the headphones deliver punchy low end and mid range sound on even the most demanding tracks. The driver uses an outer magnetic type magnetic circuit to increase drive force and generate richer bass than many larger drivers.</br>The compact Balanced Armature driver improves the linearity of mechanical vibration to reproduce clear higher range tones. A direct-drive mechanism ensures faithful transmission of the input signal to the diaphragm for optimum clarity.</br>Made from a hard silicone rubber and specially-developed formed silicone, Triple Comfort Earbuds are designed to be worn for long periods of time. A combination of softness and firmness reduces ambient noise while increasing wearing comfort. They are available in three different sizes and washable so they're easy to keep clean.</br>Take your digital music collection to another level with High-Resolution Audio. By converting analogue music to digital at a higher rate than CD (24-bit/192kHz, rather than 16-bit/44.1kHz), High-Resolution Audio allows you to get closer to the original studio recording and enjoy your music just as the artist intended.</br>Built-in Beat Response Control improves the transient characteristics in bass sound and delivers accurate rhythm.Being able to switch headphone cables allows you to take advantage of optional cables offering even higher sound quality and usability. Options include a balanced cable with separate left and right ground wires for less crosstalk and noise, and a Bluetooth upgrade cable for wireless listening.</br></br>Product Description</br></br>Size & Weight WEIGHT Approx. 6g without cable General Features DYNAMIC TYPE Closed,Hybrid DRIVER UNIT Hybrid FREQUENCY RESPONSE (HZ) 4Hz-40,000Hz SENSITIVITIES (DB/MW) 102dB/mW, 105dB/mW IMPEDANCE (OHM) 32Ω(at 1kHz) VOLUME CONTROL N/A CORD TYPE Detachable Y type CORD LENGTH Approx. 1.2m PLUG L-shaped gold-plated 4-pole mini plug USAGE TIME N/A CHARGE TIME N/A Design and Sound Features BEAT RESPONSE CONTROL In-ear What's In The Box Clip Carring Case Headphone cable Length Adjuster Hybrid earbuds(SS/S/M/L) Triple Comfort Earbuds(S/M/L)</br>