Seiko Cal. 6365 - 631

The 6365-631 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6365 caliber with 28j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-0de8ec835e4a]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1988

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