Seiko Cal. 5666 - 361

This Spring Drive model from 1984 features a 39mm Stainless Steel case. The Coin-Edge bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-b21d045bb3b1]

Also known as: Sportsmatic, Crown

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1984

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