Seiko Cal. 6634 - 857

The 6634-857 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6634 caliber with 20j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-da6fe58847da]

Also known as: UFO, Sea Horse

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1989

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