Seiko Cal. 6639 - 152

The 6639-152 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6639 caliber with 17j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-2f203bab31df]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

17j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1995

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