Seiko Prospex: a vivid story that exceeds even the wildest expectations of athletes and adventurers. Unique diver's watches, dynamic pilot's watches and examples with rotating compass ring. No wish is left unanswered. Timepieces with professional specifications to discover the world your way. On land, at sea and in the air. Experience Seiko technology.
A mechanical watch automatically charges itself while worn by converting the wearer's arm and wrist movements into energy. Movement of the watch causes the main spring of the watch to be wound. This spring is the energy source.
The 4R35 Seiko caliber with date display is a mechanical caliber. The watch automatically recharges itself while worn by converting the wearer's arm and wrist movements into energy. Movement of the watch causes the main spring of the watch to be wound up. This spring is the energy source. Hand winding is also possible. When fully charged, the watch has a power reserve of approximately 41 hours. The tick rate of this automatic is 21,600 per hour and the watch has 23 jewels. The 4R caliber is completely manufactured in-house.
Functions: Hand winding possible, Stop function seconds hand, Uni rotating bezel.