.HANDS-FREE CALL & BUILT-IN MIC: Please Note: Bluetooth headphones provide a quick and stable connection with your Bluetooth enabled devices like cell phones, tablets, pc, TVs within 33 feet, with a high-quality built-in microphone for hands-free calls.

2.FOLDABLE DESIGN WITH A PORTABLE BAG & GENTLE REMINDER : The foldable Headband is not only designed for saving your desk space but for carrying in the provided bag.