Santos style

Movement: Seiko Instruments (SII) Caliber NH38

• Type: Automatic Mechanical (Self-winding + Hand-winding)

• Accuracy: -20 ~ +40 seconds per day (average)

• Power Reserve: ~41 Hours

• Jewels: 24 Jewels

• Functions:

  • Central hours, minutes, and sweeping seconds.

  • True No-Date: No "phantom" crown position (only 2 positions: wind and set time).

  • Open balance wheel at 9:00 (visible on open-heart dials).

• Description: A solid, no-frills workhorse movement widely respected by enthusiasts for its durability.