Seiko Cal. 6678 - 665

Seiko 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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