Seiko Cal. 3866 - 741

The Seiko 3866-741 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-9b250d48c235]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1977

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