Seiko Cal. 6637 - 733

Seiko 6637-733

The 6637-733 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6637 caliber with 17j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-d2bef875e7c5]

Also known as: Shogun

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
12.0mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Cream
Jewels
17j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1978

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