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Seiko Astron GPS Solar Chronograph 43,3mm White
The Seiko Astron GPS Solar Chronograph 43,3mm White is a limited edition of 800 pieces created in support of Médecins Sans Frontières. The white silver dial is decorated with red accents in the organisation's signature colour, framed by a white ceramic bezel on a titanium case.
GPS Solar chronograph movement
The in-house 5X83 calibre connects to GPS satellites for automatic time zone adjustment and features a chronograph and dual time function, all powered by light with no battery change required.
Titanium case and bracelet
The titanium case features a super hard coating and a scratch resistant white ceramic bezel, paired with a titanium bracelet with ceramic centre links and the engraving IN SUPPORT OF MEDECINS SANS FRONTIERES on the case back.
Specifications
Brand: Seiko
Collection: Seiko Astron
Reference: SSH173J1
Case material: Titanium
Case diameter: 43.3 mm
Dial colour: White
Strap: Titanium, silver toned
Movement: GPS Solar
Time display: Chronograph
Royal Coster Diamonds
Royal Coster Diamonds offers a curated selection of fine watches alongside its diamond and jewelry collections, with each timepiece carefully inspected, securely packaged, and insured during shipment.
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The 4C's
The 4C's of a diamond are the four key characteristics that determine the quality and value of a diamond: cut, carat weight, color, and clarity. Together, these four characteristics are used to evaluate the quality and value of a diamond, and are considered when determining a diamond's price.
Carat
The weight of a diamond is expressed in carats and points (1 ct = 100pt). ‘Carats’ come from ‘Carob’ seeds, which were originally used for their constant weight in nature (1 ct = 0.2 g). The carat and the color are the factors that influence the most the final price of the diamond.
Clarity
The clarity is a gemstone's relative freedom from internal imperfections. These imperfections are observed with a x10 magnifier ('loupe') and affect the final value of the diamond differently.
Color
Diamonds are found in nature in different colors. White diamonds can be more or less yellow and are categorised with a letter between D (commonly known as ‘River’) to Z . The different naming systems vary depending on the certifier. Diamonds are also found in all colors; the rarest colors are classified as Fancy-colored diamonds.
Cut
The cut is the diamond’s shape. A cut grade describes the proportions of the cut and the quality of its symmetry and polish. A perfect cut makes the best sparkle.