Seiko Cal. 3888 - 690

The 3888-690 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3888 caliber with 18j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-80098a10778b]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1974

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