Seiko Cal. 7157 - 831

The 7157-831 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-8bdf1ba4b662]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1965

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