Seiko Cal. 6636 - 507

Seiko 6636-507

The Seiko 6636-507 represents an important milestone in Seiko's 1985 lineup. Powered by the 6636 caliber with 29j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-83e9dc0161b4]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
38mm
Case Thickness
10.6mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
190m
Dial Color
Green
Jewels
29j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1985

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