Seiko Cal. 3888 - 680

This Spring Drive model from 1973 features a 34mm Two-Tone case. Powered by the 3888 caliber with 25j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-dab0d5d2a732]

Also known as: UFO, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1973

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