Seiko Cal. 5645 - 641

The Seiko 5645-641 represents an important milestone in Seiko's 1976 lineup. It features a White dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-8e52597d902c]

Also known as: Tuna, Goldfeather

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

10.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1976

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