Seiko Cal. 3815 - 183

The Seiko 3815-183 represents an important milestone in Seiko's 1970 lineup. Powered by the 3815 caliber with 33j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-62c8ce6c7513]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1970

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