Seiko Cal. 6613 - 733

This Spring Drive model from 1965 features a 40mm Stainless Steel case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-c7f086b18215]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1965

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