Band and watch

A band comprising:

• a spring bar including a shaft member, an operation portion, and a protruding member;
• an outer piece including a first outer piece component and a second outer piece component;
• and
• a middle piece disposed between the first outer piece component and the second outer piece component, wherein
• the first outer piece component includes a first outer piece insertion hole provided along an axial direction of the shaft member, the second outer piece component includes a second outer piece insertion hole provided along the axial direction,
• the middle piece includes a middle piece insertion hole provided along the axial direction, and a middle piece recessed portion provided along the axial direction and in communication with the middle piece insertion hole,
• the first outer piece insertion hole, the middle piece insertion hole, the middle piece recessed portion, and the second outer piece insertion hole are disposed in this order along the axial direction, and
• the spring bar is inserted through the first outer piece insertion hole, the middle piece insertion hole, the middle piece recessed portion, and the second outer piece insertion hole, the operation portion is disposed protruding from an opening of the middle piece recessed portion, and the operation portion is configured to move in the axial direction in this state.