Seiko Cal. 6638 - 967

Seiko 6638-967

The Seiko 6638-967 represents an important milestone in Seiko's 1982 lineup. Powered by the 6638 caliber with 34j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-01336768d6b7]

Also known as: Helmet, Bellmatic

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
9.3mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
140m
Dial Color
Champagne
Jewels
34j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1982

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seikata-wm-01336768d6b7