Seiko Cal. 6631 - 295

The 6631-295 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6631 caliber with 22j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-855967ada54f]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1968

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