Seiko Cal. 6646 - 727

This Spring Drive model from 1991 features a 40mm Hardlex-Coated Steel case. It features a Silver dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-8bd9a67afbee]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1991

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