Seiko Cal. 6638 - 281

Seiko 6638-281

The 6638-281 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6638 caliber with 36j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-39ae46c4d8f6]

Also known as: Sportsmatic, Flighty

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
12.5mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
110m
Dial Color
Black
Jewels
36j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1970

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seikata-wm-39ae46c4d8f6