Solid-state audio player with network interface for (automatic) synchronization of audio tracks and schedules, running on a rechargeable batteries (internal charger).
Description
This music player functions as a backup system for the main audio system, in case of failure. The backup must therefore be able to operate independently of other equipment and resources, but use essentially the same schedules as the main music system. When there is no calamity, the backup player sits idle and keeps its playlists and schedules synchronized with the main music system.