Portable device and portable watch

A portable device comprising:

• a device sheath having a through-hole and a storage hole intersecting the through-hole;
• a display portion mounted on the device sheath;
• a pipe inserted into the through-hole and fixed to the device sheath;
• an operating member having a shaft portion slidably inserted into the pipe, an operating head provided at one end of the shaft portion and inserted into the through-hole, and an engaging portion formed on the operating head;
• a circular operating ring surrounding the display portion and having a locking surface which can oppose the storage hole and an unlocking recess opening on the locking surface and being rotatably mounted on the device sheath from the front side of the sheath;
• a locking member having an insertion portion into which the operating head can be inserted and a stopper portion which allows engagement of the engaging portion, the locking member being stored in the storage hole so as to be movable between a locked position where the engaging portion is engaged with the stopper portion and an unlocked position where the stopper portion is positioned apart from the engaging portion;
• and
• an urging member arranged in the storage hole and urging the locking member toward the operating ring.