The charger attaches to the rear frame of the bicycle and has a roller which is spun by the rear wheel of the bicycle and has a cord which runs to the pocket of the rider and can connect to Nokia phones using either the small pin connector or large pin connector. When the owner does not want to use the charger, he or she can disengage the charger by adjusting the unit to its off position. Adapters for other phone models are available on request