Seiko Cal. 6636 - 372

Seiko 6636-372

The Seiko 6636-372 represents an important milestone in Seiko's 1978 lineup. Powered by the 6636 caliber with 32j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-06a132b84a35]

Also known as: Bullhead, Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
14.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
32j
Frequency
36,000 bph
Power Reserve
70 hours
Year
1978

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seikata-wm-06a132b84a35