Seiko Cal. 6638 - 839

The 6638-839 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-e0db469d518e]

Also known as: Helmet, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1983

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