Seiko Cal. 5661 - 178

This Spring Drive model from 1967 features a 44mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-347399a50c79]

Also known as: Crown, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

12.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1967

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