Seiko Cal. 5231 - 365

The 5231-365 is a sought-after Spring Drive piece from Seiko's golden era. The Fixed bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-947fd396aa2d]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1970

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