Seiko Cal. 5231 - 129

The 5231-129 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5231 caliber with 28j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-6983fc5be78e]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1974

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