Seiko Cal. 4531 - 109

The Seiko 4531-109 represents an important milestone in Seiko's 1970 lineup. Powered by the 4531 caliber with 33j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-8b14c0bd34df]

Also known as: World Timer, Crown

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

33j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1970

Related Models

• Seiko 6193-954
• Seiko 6336-422
• Seiko 6139-268
• Seiko 6312-340
• Seiko 4422-933
• Seiko 7195-156
• Seiko 5273-481
• Seiko 0735-968
• Seiko 5621-318
• Seiko 6261-252
• Seiko 7071-627
• Seiko 5623-550