Seiko Cal. 5680 - 809

This Spring Drive model from 1977 features a 46mm Stainless Steel case. It features a Navy dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-ca42f39a6059]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1977

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