Seiko Cal. 6638 - 264

Seiko 6638-264

The Seiko 6638-264 represents an important milestone in Seiko's 1980 lineup. Powered by the 6638 caliber with 27j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-9be953ff6b85]

Also known as: Turtle, Goldfeather

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
40mm
Case Thickness
9.0mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
140m
Dial Color
White
Jewels
27j
Frequency
36,000 bph
Power Reserve
38 hours
Year
1980

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