Seiko Cal. 5646 - 237

The Seiko 5646-237 represents an important milestone in Seiko's 1987 lineup. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-b9432bd56207]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1987

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