Seiko Astron SSH175J1

The Seiko SSH175J1 watch is a successor model to earlier Seiko Astron timekeeping instruments and features advanced GPS solar technology that automatically adjusts to the correct local time zone anywhere in the world. This watch receives GPS signals to synchronize time with atomic clock accuracy while simultaneously utilizing solar charging to operate its functions without the need for battery replacement. The stainless steel case measures 42.5 mm in diameter and has a thickness of 13.3 mm, housing a sapphire crystal with an anti-reflective coating for enhanced durability and scratch resistance. The black dial features luminous hands and indices for improved visibility in low light conditions, complemented by a date display at the 4 o'clock position. It is water-resistant up to 10 bar (100 meters), making it suitable for swimming and snorkeling activities. The bracelet is made of stainless steel with a triple-fold clasp and a secure push-button release. This timepiece operates in 39 time zones with automatic time adjustment when traveling and includes energy-saving features that conserve power when not in use. The solar charging system requires about 3 hours of sunlight for one day of operation, with a full charge providing approximately 6 months of power in complete darkness. The watch maintains an accuracy within 15 seconds per month with regular GPS reception. The case back is made of solid stainless steel with engraved Seiko Astron branding, and the crown features a screw mechanism for enhanced water resistance. The watch weighs approximately 175 g including the bracelet, with individual links that can be removed for size adjustment. This model represents Seiko's commitment to precision timekeeping technology combined with practical everyday functionality for global travelers and professionals who require reliable time synchronization across multiple locations.