Seiko Astron GPS Solar Dual-Time Chronograph Titanium Watch – Model SSH153

The Seiko Astron GPS Solar Dual-Time Chronograph SSH153 redefines precision and global functionality in a sophisticated titanium package. Powered by Seiko’s advanced Caliber 5X83 GPS Solar movement, this watch automatically adjusts to local time anywhere in the world using satellite signals — no battery changes required. The textured silver dial with contrasting subdials and high-speed chronograph functions delivers both sporty performance and elegant everyday style, perfect for travelers and professionals alike. :contentReference[oaicite:1]{index=1}

This watch features GPS Solar technology — it uses satellite signals to adjust time and time zone automatically with no battery changes needed.
Designed for modern travelers with dual-time, chronograph, and world time functions in a lightweight titanium case.

Specifications
Brand: Seiko
Model: SSH153
Collection: Astron GPS Solar
Movement: GPS Solar (Caliber 5X83)
Power Reserve: Approximately 6 months (full charge), up to 2 years in power save mode
Jewels: 14
Case Material: Titanium with super-hard coating and ceramic bezel
Case Diameter: 43.3 mm
Case Thickness: 13.4 mm
Lug-to-Lug: 49.5 mm
Crystal: Dual-curved sapphire crystal with super-clear coating
Dial Color: Silver
Bracelet: Titanium bracelet with super-hard coating
Clasp: Three-fold clasp with push-button release and smart adjuster
Water Resistance: 10 bar / 100 meters
Magnetic Resistance: 4,800 A/m
Caseback: Screw caseback
Weight: Approx. 117 g
Functions:
- GPS-controlled time and time zone adjustment
- Dual-time display
- Perpetual calendar (to February 28, 2100)
- Chronograph (up to 12 hours in 1/20-second increments)
- Power reserve indicator
- Day display AM/PM indicator
- Daylight saving time (DST) function
- In-flight mode
- Automatic hand position alignment