| 摘要 |
A system is described that includes a base adapted to hold a device which is removable therefrom, the system including a retractor mechanism coupled to the base and having a retractable cord wound thereon with both ends extending therefrom through at least one opening as a line part of the retractable cord for access by a wearer of the base, and setting means providing adjustability of a perch position on the wearer for the base. |
