CPC A44C 9/0053 (2013.01) [A44C 9/0023 (2013.01); A44C 15/0015 (2013.01); A61B 5/0006 (2013.01); A61B 5/0059 (2013.01); A61B 5/02416 (2013.01); A61B 5/02438 (2013.01); A61B 5/24 (2021.01); A61B 5/6826 (2013.01); A61B 2560/0468 (2013.01)] | 23 Claims |
1. A ring-type wearable device comprising:
an outer ring;
an inner ring detachably inserted into an inner side of the outer ring;
a cover surrounding an outside of the outer ring;
a sensor including a portion exposed towards an inside of the inner ring through a first opening in the outer ring and a corresponding second opening in the inner ring; and
a control circuit disposed in a space between the cover and the outer ring,
wherein the size of the ring-type wearable device is changeable by replacing the inner ring with a different size.
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