Seiko Cal. 7156 - 745

This Spring Drive model from 1977 features a 42mm PVD Black case. Powered by the 7156 caliber with 35j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-4e45dfe12f01]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1977

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