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The priceless value of Watches, brought to you by {name}


Masayuki Nakai

Introduction

This Seiko Astron GPS Solar Ref. 7X53-0AB0 is a groundbreaking timepiece that combines solar charging with GPS time synchronization. Designed for world travelers, it offers the convenience of automatic local time adjustment anywhere on Earth, combined with Seiko’s renowned durability and style.

Historical & Collector Value

The Astron line is historically significant as Seiko introduced the world’s first quartz watch under the Astron name in 1969. In 2012, Seiko once again revolutionized watchmaking with the Astron GPS Solar – the first watch able to connect directly to GPS satellites and adjust to any timezone. The 7X53 caliber represents this pioneering technology, making it a highly desirable piece for collectors who value innovation and modern horological history.

Specifications
	•	Brand: Seiko
	•	Model: Astron GPS Solar
	•	Reference number: 7X53-0AB0
	•	Movement: Solar Quartz (Caliber 7X53)
	•	Case material: Stainless steel with ceramic bezel
	•	Bracelet/Strap material: Black Seiko rubber strap with folding clasp
	•	Case size: Approx. 47 mm
	•	Functions:
	•	GPS-controlled time synchronization
	•	World time (40 time zones)
	•	Perpetual calendar (until February 2100)
	•	Power reserve indicator
	•	Daylight Saving Time function
	•	Water resistance: 100 m (10 bar)
	•	Accessories: Watch only (no box, no papers)

Condition

The watch is in very good overall condition. The case shows minor signs of wear, and the ceramic bezel remains clean. The dial, hands, and crystal are in excellent condition. The strap is in good condition with slight signs of use.

Service History
	•	Functionality fully checked – GPS synchronization, solar charging, and all functions confirmed working.
	•	Overhauled (OH済).
	•	Capacitor/battery checked and in good condition.

This ensures reliability and peace of mind for the next owner.

Shipping & Customs

The watch will be carefully packaged and shipped with tracking.
International buyers are welcome. Please note that customs duties and import taxes are the responsibility of the buyer.

Watch

Seiko - Astron - 7X52-0AB0 - Men - 2010-2020 

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Seiko - Astron - 7X52-0AB0 - Men - 2010-2020

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