Powered by the Seiko in-house 5X calibre with advanced functionality – every component in the GPS module has been re-engineered to make it faster and more intuitive than ever. Just three seconds are needed to advance 14 hours from Tokyo to New York time, thanks to the system that moves hour, minute, and second hand independently. The functions allow easy adjustment to Daylight Saving Time and give the wearer the ability to switch the main dial instantly from home to local time and vice versa. When a time zone adjustment is required, all it takes is a simple push of a button and the hands move faster than ever to the exact local time.

Seiko Astron: the world’s first GPS solar watch – powered by light, automatically adjusted to your exact time through the latest satellite technology.

Movement
- Accuracy: ±15 seconds per month (±1 second per day)
- Calibre: 5X53
- Movement Type: GPS Solar
- Battery Life: Operating for approx. 6 months (when fully charged)

Watch Case
- Case Material: Titanium/ceramic bezel
- Case Thickness: 12.22mm
- Case Diameter: 43.1mm
- Case Length: 48.0mm

Exterior
- Dial Colour: Purple
- LumiBrite: Lumibrite on hands and indexes
- Clasp: Three-fold clasp with push button release
- Strap/Bracelet: Titanium

Other Specifications
- Water Resistance: 10 bar
- Crystal Coating: Super-Clear Coating
- Crystal Type: Sapphire
- Perpetual calendar until 28th February 2100