Seiko Cal. 6633 - 451

The 6633-451 is a sought-after Solar piece from Seiko's golden era. Powered by the 6633 caliber with 29j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-96f14cb7f4fc]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1978

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