Seiko Cal. 7158 - 844

The 7158-844 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7158 caliber with 36j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-e36cec6bf813]

Also known as: Helmet, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1965

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