Astron GPS Solar

The SSE077J1 measures 44.8 mm, a touch smaller than the line's usual 45 mm cases, in titanium with a ceramic bezel and 100 m water resistance. It runs the 8X53 GPS solar quartz world-time caliber at 32,768 vph. Produced from 2015 to 2019, it offered the full Astron dial palette.

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