Description
Extending the legacy of the Seiko Astron, the world’s first commercially available quartz watch, today’s Astron is designed for a new generation of leaders to break through to a new future with excellence in both innovation and style. Strong and distinctive, with its perfectly sculpted octagonal titanium bezel, this dynamic timepiece combines solid tailoring with the highest degree of accuracy possible in a wristwatch, equipped with Seiko’s 5X63 GPS solar caliber. The precision watch offers 1/20 second chronograph timing and dual-time functionality with a daylight saving time function, power save function, perpetual day/date calendar correct to the year 2100, and a time transfer function that allows the user to switch the main time and dual time indications with the push of a button, all powered by light energy with no battery change required. The textured black dial showcases a deeply embossed pattern, three-dimensional applied indices, three subdials with a contrasting finish, and LumiBrite hands and markers for visibility in low-light conditions. Crafted of light and durable titanium, with a super-hard coating for enhanced scratch resistance, this superb timepiece includes a sapphire crystal with super-clear coating, secure screwdown caseback, and an easily changeable bracelet with a tri-fold push button release clasp with Smart Adjuster function. 10 bar, 100M Water Resistant.
Features
- Astron GPS Solar Dual Time Chronograph
- High speed GPS time and time zone adjustment (39 time zones)
- Perpetual day and date calendar correct to the year 2100
- 1/20 second chronograph
- 24-hour dual time indicator and time transfer functions
- DST, in-flight mode, and power save functions
- Signal reception result indicators
- Octagonal titanium bezel
- Black dial with deeply embossed pattern and gold accents
- LumiBrite hands and markers
- Tri-fold push button release clasp with Smart Adjuster function
Movement
Caliber Number:Â 5X63
Movement Type:Â GPS Solar
Precision: ±15 seconds per month (without receiving a GPS signal and at temperatures between 5°C and 35°C)
Power Reserve:Â Operating for approx. 6 months (whne fully charged), power save: approx. 2 years
Jewels:Â 14
Functions:
-
- Overcharge prevention function
- Power save function
- Chronograph up to 24 hours in 1/20 second increments
- Perpetual calendar to February 28, 2100
- World time function (38 cities)
- Dual-time function
- Day display
- Power reserve indicator
- Time transfer function (Switching between the main dial and sub-dial)
- GPS signal reception function (Time zone adjustment, automatic time adjustment, manual time adjustment)
- Satellite acquisition status display function
- Reception result display function
- DST (Daylight Saving Time)
- Function to prevent the GPS signal reception (in-flight mode)
- Automatic hand position alignment function
Case/Band
Case Material:Â Titanium (super-hard coating)
Case Size:
-
- Thickness: 12.4 mm
- Diameter: 43.4 mm
- Lug-to-lug: 50.0 mm
Crystal:Â Sapphire crystal
Crystal Coating:Â Super-clear coating
LumiBrite:Â LumiBrite on hands and index(es)
Clasp:Â Easy-adjust three-fold clasp with push button release
Distance between lugs:Â 14 mm
Other Details
Water Resistance:Â 10 bar, 100 meters (328 feet)
Magnetic Resistance:Â 4,800 A/m
Features:
-
- Allergy-safe metal
- Quick-change system
- Screw case back



