Seiko Cal. 6166 - 490

This Hand-Winding model from 1973 features a 40mm Gold-Plated case. It features a Navy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-e7ae53daadd8]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1973

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