Seiko Cal. 6647 - 974

The Seiko 6647-974 represents an important milestone in Seiko's 1993 lineup. It features a Silver dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-e2a1d6181d7c]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1993

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