With the quad-armature design of the Ultimate Ears 900 Noise-Isolating Earphones, the audio signal is passed through a three-way crossover that directs signals to frequency-specific drivers. The sound is then channeled through our patented dual-bore audio paths with a high-frequency horn for maximum clarity. It comes with five silicon and three Comply® foam ear cushions, so you'll enjoy maximum comfort and up to 26 dBs of noise isolation. With two detachable, braided cables, you can swap out the standard cable for the cable-plus-mic and controls option for when you want to use your headphones to control your smartphone or tablet.
The ear loops offer a secure, comfortable fit you can wear for a long time—even while exercising.