Seiko Cal. 4536 - 991

This Quartz model from 1980 features a 36mm Gold-Plated case. Powered by the 4536 caliber with 31j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-a8bf22f3b5b0]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1980

Related Models

• Seiko 4541-419
• Seiko 6663-126
• Seiko 4461-961
• Seiko 5286-625
• Seiko 7041-691
• Seiko 6324-152
• Seiko 3825-916
• Seiko 7139-126
• Seiko 5620-700
• Seiko 6136-162
• Seiko 4593-822
• Seiko 0799-191