Features: Lightweight in-ear headphone provides natural clear sound and super enhanced bass. Noise isolating in-ear design blocks ambient noise to help you focus on listening pleasure. Built-in microphone enables you to make and answer calls hands-free while doing sports. Universal 3.5mm gold-plated plug, compatible with almost all 3.5mm audio devices. You don't have to worry about running out of power, give you unlimited wired listening.