Wristband and wrist wearable device

A wristband, comprising:

• a wristband body portion;
• a connecting portion, wherein one end of the wristband body portion is connected to the connecting portion, the connecting portion is connected to one end of a device body of a wrist wearable device, and another end of the wristband body portion is a free end;
• and
• a memory metal portion, which is provided on the wristband body portion and has an arc-shaped memory state in a natural state, so that the wristband body portion is naturally maintained in an arc shape, and the wristband is naturally maintained in a wearing state,
• wherein:
• the memory metal portion comprises a strip-shaped memory metal piece,
• the memory metal piece comprises a first metal segment, a second metal segment, and a third metal segment that are sequentially connected,
• both the first metal segment and the third metal segment extend along a length direction of the wristband body portion and are in parallel,
• the second metal segment is provided at the free end of the wristband body portion, and the second metal segment is provided with at least one bent portion, and
• an end of the first metal segment away from the second metal segment and an end of the third metal segment away from the second metal segment are both connected to the connecting portion, and the end of the first metal segment away from the second metal segment and the end of the third metal segment away from the second metal segment are close to each other.