Seiko Cal. 6684 - 758

This Spring Drive model from 1974 features a 41mm Hardlex-Coated Steel case. It features a Navy dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-601875e84577]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1974

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