Seiko Cal. 6637 - 619

Seiko 6637-619

The 6637-619 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6637 caliber with 30j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-d6770fef5d5c]

Also known as: Sportsmatic

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
15.2mm
Lug Width
22mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
90m
Dial Color
White
Jewels
30j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1981

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