Seiko Cal. 4531 - 437

The Seiko 4531-437 represents an important milestone in Seiko's 1999 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-03bcb32e41bb]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

32j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1999

Related Models

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• Seiko 6278-170
• Seiko 7012-487
• Seiko 4451-942
• Seiko 0725-426
• Seiko 6186-788
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• Seiko 6675-845
• Seiko 6625-434
• Seiko 6251-650
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