Rados sintra collection was launched in 1993 the bracelet is a continuation of the rectangular case a feature that distinguishes sintra watches this rado sintra black automatic watch for men is equipped with swiss made automatic calibre the case and bracelet are made of rados hi tech black ceramics a date window is positioned at the 6 oclock mark scratch resistant sapphire crystal glass adds to the resilience of the timepiece hands mark hours minutes and seconds