Seiko Cal. 6638 - 920

The 6638-920 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6638 caliber with 27j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-863b487b3f63]

Also known as: Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Champagne

Jewels

27j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1999

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