Features: * With 4.1 BTchip, it can wirelessly connected with your BT-enabled devices. * Colorful LED glowing cord brings you both aural and visual enjoyment. * 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. Note: 1. Do not fold the cable more than 90 degrees to prevent the light tubes from damaging. 2. Uneven light emission is a normal phenomenon, because the light is emitted from the line control part and the light tube length of the two sides are different.