Seiko Cal. 5647 - 937

This Spring Drive model from 1989 features a 44mm Stainless Steel case. Powered by the 5647 caliber with 20j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-9d6b5f900f9e]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1989

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