Seiko Cal. 5644 - 237

This Automatic model from 1972 features a 46mm Two-Tone case. It features a Green dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-108b8f5b96fd]

Also known as: Silverwave

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1972

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