Seiko Cal. 6637 - 205

The 6637-205 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-60126eb71b5a]

Also known as: Pogue, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1970

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