Seiko Cal. 3880 - 692

The Seiko 3880-692 represents an important milestone in Seiko's 1977 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-cc5647fcdfe9]

Also known as: Sea Horse, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1977

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