Seiko Cal. 6645 - 360

This Spring Drive model from 1968 features a 37mm Gold-Plated case. It features a White dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-49d49adfc089]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

35j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1968

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