Seiko Cal. 6638 - 891

Seiko 6638-891

The 6638-891 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-a555cd3b49be]

Also known as: Goldfeather

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
40mm
Case Thickness
12.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
White
Jewels
23j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1995

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