The Geemarc Induction Headphones CL Hook 3 is a special hands-free device for people with hearing aids. There is an induction loop on both sides of the headphones that you simply hang over your ear. To ensure that the loop remains comfortable to wear even after extended periods, the ear hook is ergonomically shaped and only 1 mm thick, making the hands-free device very pleasant to wear. The CL Hook 3 headphones are equipped with a 3.5 mm jack plug, allowing you to connect the headphones to any mobile phone or telephone. The sound is transmitted via induction directly to your hearing aid.