Seiko Cal. 5231 - 602

The 5231-602 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5231 caliber with 31j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-be3c15413943]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1971

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