Seiko Astron

The Seiko Astron, reference SSH104J1, is a GMT watch with a 42.8 mm titanium case. The watch has world time, a perpetual calendar and a power reserve indicator. The case is 14.7 mm thick, with a lug-to-lug measurement of 50.3 mm and a water-resistance rating of 200 metres. Solar-powered calibre 5X53 contains 12 jewels and operates for approximately 6 months when fully charged. The dial is covered by a dual-curved sapphire crystal with a Super Clear coating. Fastening is by a three-fold clasp with push-button release and fine adjustment. Movement accuracy is plus or minus 15 seconds per month without signal reception at temperatures between 5 and 35 degrees Celsius. LumiBrite is applied to the hands and indices.