Seiko Cal. 7077 - 640

The 7077-640 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-516586ca7dd9]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

22j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1987

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