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- Crafted and certified in line with our standards since 1840
Seiko Prospex Coastline Diver Automatic 41,3mm Blue
The Seiko Prospex Coastline Diver Automatic 41,3mm Blue combines the qualities of a sports watch with the elegance of a dress watch. The cobalt blue dial features a calm coastline pattern, framed by a blue polygonal bezel with gently curved surfaces in a steel case with matching bracelet.
Automatic movement
The in-house 6R55 automatic movement offers a generous 72 hour power reserve with manual winding capability, accurate to -15/+25 seconds per day.
Professional dive specifications
Water resistant to 300 meters and conforming to professional ISO diving specifications, with Lumibrite coated hands and indices for high visibility in dark conditions.
Specifications
Brand: Seiko
Collection: Seiko Prospex
Reference: SPB483J1
Case material: Steel
Case diameter: 41.3 mm
Dial colour: Blue
Strap: Steel, silver toned
Movement: Automatic
Time display: Analog
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.