Seiko Astron

The Seiko Astron, reference SSH009J1, has a 43.5 mm titanium case. The case is 13.3 mm thick, with a lug-to-lug measurement of 50.7 mm and a water-resistance rating of 100 metres. Solar-powered calibre 5X53 contains 12 jewels and operates for approximately 6 months when fully charged. Over the dial is a sapphire crystal with a Super Clear coating. The watch has a three-fold clasp with push-button release; the hands and indices carry LumiBrite. Movement accuracy is plus or minus 15 seconds per month without signal reception at temperatures between 5 and 35 degrees Celsius. The lug width measures 21 mm. The bezel has a ceramic insert.