Abstract: The present disclosure generally relates to a tightening apparatus, a wristband having the same, and a wristwatch having the same. In one embodiment, a plurality of pieces are coupled together and to a housing, and have one or more wires running through at least a first piece and a second piece of the plurality of pieces. The first and second pieces of the plurality of pieces are spaced a distance apart. The housing partially encloses at least a ratchet having a center axis, and a spool coupled to the ratchet, the spool being rotatable about an axis that is collinear with the center axis. The one or more wires are coupled to the spool, and are configured to wind around the spool when the spool rotates. As the spool rotates, the distance between at least the first and second pieces of the plurality of pieces is reduced.