SEIKO ASTRON/ SSH137 Chrono Lug-to-lug:40

Lug-to-lug:40

daylight saving on/off

Sapphire case-back with oscillating weight

a small second hand at 9 o’clock and two sub-dials for chronograph functions: a minute counter at 12 o’clock and an hour counter at 6 o’clock

improving symmetry and legibility

SEIKO ASTRON/ SSH137 Chrono Lug-to-lug:40ASTRON GPS SOLAR LIMITED EDITION Astron GPS Solar Limited Edition. With the strong, sleek lines of the Seiko Astron, the worlds first commercially available quartz watch, todays Astron is designed for a new generation of leaders, breaking through to the future with excellence in both innovation and style. Available only in a controlled production run of 1,200, with the production serial number engraved on each caseback, this distinctive Limited