The sapphire crystal is hand-cut by a jewel polisher to create a bezel that reflects light intricately like the sparkle of the sea. The cut and design were personally supervised by Kazuhito Komatsu, a Japanese craftsman who heads one of the world’s leading workshops. The random yet harmonious cut surfaces are truly a work of art, backed by experience and sensibility. Due to the laborious and time-consuming process, only a few pieces are produced each day, and each one shines as a one-of-a-kind item. 24 facet cuts are used on the thick sapphire crystal. After being cut by a gemstone polisher, a fine hairline-like pattern is engraved using laser processing, resulting in a finish that reflects light intricately. Furthermore, the color is enhanced by gradation vapor deposition and sputtering processing that changes from light blue to blue. The mold used to form the dial uses recrystallized titanium, which has been heat-treated to create a crystal pattern on its surface. Using advanced mold transfer technology, the fine texture of the mold has been reproduced on the dial. Furthermore, it is colored with a gradation color that changes from light blue to blue using a vapor deposition process. The accent color of pink gold is applied everywhere to express the sparkle of the sea where the light of the city shines.


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  • Case size (L× W× H)

    47 × 42.5 × 9.2 mm
  • Weight

    87 g
  • Case and bezel material

  • Band

    Titanium Band
    Solid Band
    One-touch, slide-adjustable three-fold clasp
  • Water resistance

    100-meter water resistance
  • Power supply and battery life

    Tough Solar (Solar powered)

  • Smartphone Link feature

    Mobile link (Wireless linking using Bluetooth®)
  • Apps

  • App connectivity feature

    Auto time adjustment
    Easy watch setting
    Approximately 300 world time cities
    Main mode switching
    Watch status display
    Phone finder
    Premium Production Line certificate

  • Glass

    Sapphire crystal with anti-reflective coating
  • Surface treatment

    Diamond Like Coating
  • Compatible band size

    150 to 205 mm
  • Other


  • World time

    World time 38 time zones (27 cities + coordinated universal time), Home city time swapping, auto summer time (DST) switching
  • Stopwatch

    1-second stopwatch Measuring capacity: 23:59’59
  • Calendar

    Full auto-calendar (to year 2099)
  • Hand home position correction feature

    The auto hand home position correction
  • Energy saving feature

    Power Saving (hands stop to save power when the watch is left in the dark)
  • Battery display/alert

    Battery level indicator
  • Run time

    Approx. battery operating time: 5 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
  • Accuracy

    Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)
  • Other features

    Date display
    Day indicator
    Regular timekeeping: Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24 hour, day)
  • Time adjustment details

    Time calibration signal reception Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal Manual receive The latest signal reception results
    Time Calibration Signals Station name: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz Station name: MSF (Anthorn, England) Frequency: 60.0 kHz Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga) Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz
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