Seiko Cal. 7156 - 745

Seiko 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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