The innovation movement around the neck magnet automatic adsorption design adsorption is firm easy to carry Ergonomic earplug perfectly fit the auricle paired with large middle and small types of soft and comfortable medical siliconeearplugs firm comfortable wearing experience, to ensure the movement when the earplug will not fall off Super smart noise and noise reduction, enjoy the pure quality of the time  Smart Bluetooth, HD talk experience built-in HD microphone with the advanced voice input noise technology you can get high-quality voice input effect* Multi function remote operation answer hang up the phone switch songs handy moving more freely Fully compatible with apple Android system.