Seiko Cal. 6678 - 665

This Spring Drive model from 1987 features a 39mm Titanium case. Powered by the 6678 caliber with 23j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-abef13f435a0]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1987

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