PROBLEM TO BE SOLVED: To provide a switch gear capable of easily performing a lock operation and a lock release operation.SOLUTION: The switch gear includes: a lock member 9 for locking movement of an operation member 8 having an operation shaft portion 24 to be inserted in an open hole 12 of a wrist watch case 1 and an operation head portion 23 at an outer end portion, in a shaft direction; and a spring member 10 for releasing the lock by the lock member 9. The lock member 9 includes: a rotational axial portion 30 attached to the wrist watch case 1 to be rotatable; a hook portion 32 to be detachably inserted in a lock groove 31 disposed on the operation member 8; and a release portion 34 which is detachably inserted in any one of plurality of release grooves 33 disposed on the operation member 8 and releases the lock by the hook portion 32. As a result, the hook portion 32 can be detached from the lock groove 31 to release the lock only by performing a rotation operation on the operation member 8, and the ho
