Seiko Cal. 5633 - 868

The 5633-868 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5633 caliber with 29j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-939ea88746c4]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1981

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