Seiko Cal. 7158 - 421

Seiko 7158-421

The 7158-421 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7158 caliber with 30j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-c547117eff07]

Also known as: Helmet

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
41mm
Case Thickness
10.9mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Green
Jewels
30j
Frequency
36,000 bph
Power Reserve
53 hours
Year
1990

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