Seiko Cal. 6660 - 313

This Spring Drive model from 1966 features a 44mm Titanium case. It features a Navy dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-051391b43dcf]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1966

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