Seiko Cal. 3878 - 747

The Seiko 3878-747 represents an important milestone in Seiko's 1987 lineup. Powered by the 3878 caliber with 26j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-0dce0fc76ad3]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

26j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1987

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