Seiko Cal. 6637 - 837

The 6637-837 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6637 caliber with 22j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-b00805576aeb]

Also known as: Sea Horse, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1987

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