Seiko Cal. 5665 - 438

This Spring Drive model from 1996 features a 40mm Stainless Steel case. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-489641891bc8]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1996

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