A wristwatch band for a computerized watch base has a bracelet portion and a connector element. The bracelet portion extends in a length direction at least partially around a wrist of a wearer and has a power supply device to supply power to the computerized watch base. The connector element secures the computerized watch base to the bracelet portion. In the length direction, the bracelet portion may be discontinuous and terminate at first and second clasp ends. First and second clasp sections may be provided respectively at the first and second clasp ends of the bracelet portion, the first and second clasp sections releaseably connecting around the wrist of the wearer. Electrical connectors may be provided in each clasp section such that when the clasp is connected around the wrist of the wearer, an electrical connection is made from the first clasp end to the second clasp end.