Seiko Cal. 6665 - 391

Seiko 6665-391

The Seiko 6665-391 represents an important milestone in Seiko's 1969 lineup. Powered by the 6665 caliber with 26j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-fb7caf940e60]

Also known as: Baby Tuna, Arnie

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
34mm
Case Thickness
11.7mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
40m
Dial Color
White
Jewels
26j
Frequency
21,600 bph
Power Reserve
37 hours
Year
1969

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