Seiko Cal. 6634 - 400

The 6634-400 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6634 caliber with 17j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-313ce881c715]

Also known as: Rally, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

17j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1994

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