Seiko Cal. 7158 - 973

The 7158-973 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7158 caliber with 30j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-82d0571dd67a]

Also known as: Tuna, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1988

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