Seiko Cal. 6637 - 112

Seiko 6637-112

The 6637-112 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6637 caliber with 28j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-68ac04480c71]

Also known as: Helmet, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
9.8mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Black
Jewels
28j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1984

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seikata-wm-68ac04480c71