Seiko Cal. 6637 - 347

The 6637-347 is a sought-after Hand-Winding piece from Seiko's golden era. The Fixed bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-d190ed715da7]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1979

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