Seiko Cal. 6339 - 528

The 6339-528 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6339 caliber with 34j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-4bf7e7bb15b6]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1982

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