Seiko Cal. 6388 - 442

The 6388-442 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6388 caliber with 26j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-56771af017dd]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1994

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