Seiko Cal. 5666 - 641

The 5666-641 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-9c8a17ed56f5]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Cream

Jewels

26j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1980

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