Seiko Cal. 5684 - 991

The Seiko 5684-991 represents an important milestone in Seiko's 1972 lineup. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-6e1f20eeb2cb]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1972

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