Seiko Cal. 5630 - 147

This Spring Drive model from 1977 features a 46mm PVD Black case. Powered by the 5630 caliber with 28j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-ea486261ce9b]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1977

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