This is a full-fledged diver's watch that combines design elements from the 1964 Calendar Auto Orient with a modern, high-performance in-house movement and complies with the ISO 6425 standard. The green gradation is inspired by Ryusen-do Cave, a limestone cave in Iwate Prefecture that is known as a unique, mysterious and beautiful place in the world. This model reflects the spirit of the underwater research divers who are challenging themselves to unravel the mysteries of Ryusen-do Cave.
Features
Automatic (with manual winding)
Power reserve display
Second hand stop device (hacking)
22 jewels
Rotating bezel (anti-reverse structure)
Date
Replacement band included
Specifications
Movement: Mechanical
Caliber: F6N47
Average daily difference: +25 seconds to -15 seconds (static accuracy)
Drive time: Over 50 hours
Case material: Stainless steel (SUS316L)
Glass material (front): Double-sided sapphire crystal (AR coating)
Lume: Yes
Band material: Stainless steel (SUS316L)
Band color: Silver
Band width: 20 mm
Wrist length: 140-200 mm
Clasp: Tri-fold push double lock type
Included band: silicone, black, buckle (150-190 mm)
Weight: 175 g
Vertical diameter: 49.6 mm
Horizontal diameter: 41.0 mm (40.5 mm without the rotating bezel)
Thickness: 14.5 mm
Water resistance: 200 m scuba water resistance (ISO6425 standard compliant)
