Seiko Cal. 3815 - 510

The 3815-510 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3815 caliber with 33j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-90c2d24e67e7]

Also known as: Sea Horse, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1969

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