Seiko Cal. 5684 - 138

The 5684-138 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5684 caliber with 21j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-e4ddab48331b]

Also known as: Sea Horse

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1976

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