Seiko Cal. 5666 - 121

The 5666-121 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-631a3ef15c4d]

Also known as: Samurai, Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1988

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