Seiko Cal. 5640 - 587

The Seiko 5640-587 represents an important milestone in Seiko's 1977 lineup. It features a Champagne dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-633e44cde874]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

33j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1977

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