Seiko Cal. 5230 - 388

The Seiko 5230-388 represents an important milestone in Seiko's 1977 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e20ba1bc0bb2]

Also known as: Monster, Bellmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1977

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