This ISOtunes Secure Cord serves as a protective string that can be attached to ISOtunes True Wireless Headsets. It's a smart solution if you have trouble dropping your headset. It can be extremely convenient to have a safety string in your headset, especially during work, particularly if you frequently bend down or work with your head facing downwards. The safety string is also very practical if there's a risk of the headset falling into, for example, paint, a machine, or something entirely different.