Seiko Cal. 3840 - 979

This Automatic model from 1979 features a 45mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-adf22452abc9]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1979

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