Seiko Astron GPS Solar Chronograph SSE017 Casio G-Shock S Series GMAS110CM-8ACR The bezel is made from

The bezel is made from hard Ti64*1 alloy to resist stresses to this part of the watch

Strap Reference: H6000001591

Lug Size: 20mm

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selectable illumination duration

Seiko Astron GPS Solar Chronograph SSE017 Casio G-Shock S Series GMAS110CM-8ACR The bezel is made fromCaliber: 8X82 Movement: GPS Solar Chronograph Radio: GPS controlled time and time zone adjustment Chronograph: up to 6 hours in 1 5 second increments Calendar: Perpetual correct to the year 2100, Signal reception result indication World Time: function (40 Time Zones), Daylight Saving Time function, Power save function Accuracy: + 15 seconds per month (without receiving a time signal and at temperatures Case Diameter: 44. 6mm Case Thickness: 13. 3mm