Yes, Jaybird Tarah Pro has magnets in the earbuds so you can snap the ends of the buds together when wearing them around your neck. There are also magnets in the remote so the charging cradle can easily snap into the right place to charge your earbuds.
It is recommended to keep magnets away from devices and objects that could be damaged or impacted by strong magnetic fields. Magnets may interfere with certain medical devices, like a pacemaker.
You can find more information about magnets here. If you have any questions or concerns, please talk to your health professional.