Seiko Astron SSH155 GPS Solar Chronograph Titanium Black

The SSH155 combines Seiko's GPS Solar precision with comprehensive chronograph functionality in a single integrated package. The 5X83 caliber delivers satellite-synchronized accuracy across 39 time zones while measuring elapsed intervals to 1/20th second through dedicated chronograph subdials. Four vertically arranged subdials create a distinctly sporty visual signature, complemented by a black ceramic tachymeter bezel for speed calculations. The textured black dial achieves exceptional contrast against these functional elements, a benefit of improved solar cell efficiency that permits deeper surface treatments. Titanium construction with black super-hard coating creates a contemporary aesthetic while maintaining the metal's signature lightness and strength. The dual-curved sapphire crystal with super-clear coating ensures perfect legibility, while LumiBrite hands and markers provide visibility in darkness. The time transfer function lets you swap home and local time displays instantly, and the perpetual calendar maintains accuracy through 2100. Solar power delivers six months of operation on full charge, with power-save extending to two years. The slim profile and angular design flow seamlessly from case to bracelet, secured by a tri-fold clasp with Smart Adjuster for precise fit. Water resistant to 100 meters.