Seiko Cal. 6634 - 334

The Seiko 6634-334 represents an important milestone in Seiko's 1970 lineup. Powered by the 6634 caliber with 31j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-d239af8529b1]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1970

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