Seiko Cal. 7177 - 331

Released in 1980, the Cal. 7177 with design code 331 was part of Seiko's domestic market collection. It features a Green dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-68477eac5ae8]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

14.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1980

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