The HERIOS TriRetrograde Seconds Skeleton shows its strengths in design and technology with the sophisticated and fascinating retrograde seconds display. The exact rhythm of the counting then jumping seconds hands is given by a Swiss quality mechanical movement in an exclusive special version with automatic winding and with retrograde seconds function: three sectors of 20 seconds each are displayed on the round silver-coloured inner skeleton area at 6, 10 and 2 o'clock. Starting at 6 o’clock, the first hand jumps instantly back to the right to its starting position after 20 seconds. Going clockwise, the next seconds hand at 10 o'clock followed by the third at 2 o'clock take over the same task.