Seiko Cal. 5641 - 644

The Seiko 5641-644 represents an important milestone in Seiko's 1980 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-7396f79bd8aa]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Champagne

Jewels

28j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1980

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