Seiko Cal. 5640 - 821

The Seiko 5640-821 represents an important milestone in Seiko's 1997 lineup. It features a Navy dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-f5b1f6c61239]

Also known as: Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1997

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