Retractable Foldable Headphone With Adjustable Headband-Retractable Headphones

Main Features:

Adjustable headband, wear comfortable
An in-line omnidirectional microphone that picks up your voice without having to talk directly into it
3.5mm plug compatible with all devices, for iPhone, smartphones, tablets, androids, etc
Portable folding design, easy to carry, music companion for travel essential
Headphone sensitivity: 106db
Microphone sensitivity: -52db±2db
Note: Due to the earphone is produced by different batches, the color of cable is black or the same as the color of headphone. Be aware of this before you buy it.