Seiko - Astron Titanium Case 2024 Limited Edition of 1,500 - SSH157

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The infinite radiance of the starry sky expressed in a watch

The transparent light-blue molded dial evokes the power, beauty, and infinite 
radiance of the starry sky. The dial's appearance changes depending on the angle 
of view.

The watch ensures a high level of comfort and legibility thanks to a titanium case 
with a low center of gravity and a dual-curved sapphire crystal with a super-clear 
coating.

Movement
Caliber Number: 5X83
Movement Type: GPS solar
Precision: ±15 seconds per month (without receiving a GPS signal and at temperatures 
between 5°C and 35°C )
Power reserve: Operating for approx. 6 months (when fully charged), 
power save: approx. 2 years
Jewels: 14

Functions
Overcharge prevention function
Power save function
Chronograph up to 12 hours in 1/20 second increments
Perpetual calendar to the 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 & Bracelet
Case Material: Titanium (super hard coating) with ceramic bezel
Case Size
Thickness: 13.4 mm
Diameter: 43.3 mm
Lug-to-lug: 49.5 mm

Crystal: Dual-curved sapphire crystal
Crystal Coating: Super-clear coating
LumiBrite: LumiBrite on hands and index(es)
Clasp: Three-fold clasp with push button release
Distance between lugs: 14 mm

Other Details
Water Resistance: 10 bar
Magnetic Resistance: 4,800 A/m
Weight: 117g

Features
LIMITED EDITION on the case back
Serial number engraved on the case back
Allergy-safe metal
Clasp with Smart Adjuster function
Screw case back