Seiko Cal. 7158 - 789

Seiko 7158-789

This Spring Drive model from 1981 features a 36mm Hardlex-Coated Steel case. Powered by the 7158 caliber with 27j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-2f003ee908dd]

Also known as: Helmet, Silverwave

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
13.8mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
28,800 bph
Power Reserve
44 hours
Year
1981

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seikata-wm-2f003ee908dd