Seiko Cal. 5231 - 384

The 5231-384 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5231 caliber with 29j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-03de2a980c2f]

Also known as: Turtle, Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1996

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