Seiko Cal. 6634 - 639

The 6634-639 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6634 caliber with 25j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-190d58c30183]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

25j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1994

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