Seiko Cal. 3887 - 180

This Hand-Winding model from 1971 features a 45mm Two-Tone case. It features a Burgundy dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-2fc82455bacc]

Also known as: World Timer, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1971

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