Seiko Cal. 6637 - 161

The 6637-161 is a sought-after Hand-Winding piece from Seiko's golden era. With its 22mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-e98e8261779f]

Also known as: Goldfeather, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1966

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