Seiko Cal. 6637 - 685

Seiko 6637-685

This Kinetic model from 1978 features a 38mm Stainless Steel case. Powered by the 6637 caliber with 27j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-a2cf701c2639]

Also known as: Sportsmatic

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
9.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1978

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seikata-wm-a2cf701c2639