Revolutionary digital technology allowing digital displays of exact time and turns per day (TPD) are just the beginning. Truly unique is the photo-optic system that counts each cylinder rotation and automatically advances the rest position 30° after each rotation. The result is that watch accuracy errors caused by gravity are negated while any mechanical watch is on the winder. Set within the robust crystal glass sleeve enclosure, every nuance of the winder is fully visible. The digital TPD display automatically resets at midnight and several flashing blue LEDs add a dramatic visual effect. Operation is enabled by a supplied universal AC/DC power adapter.