Seiko Cal. 5690 - 318

This Hand-Winding model from 1979 features a 46mm Stainless Steel case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-6eaca2566d0c]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1979

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