Seiko Cal. 5639 - 551

This Automatic model from 1982 features a 40mm Titanium case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-1aafa019f186]

Also known as: Bullhead, Rally

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1982

Related Models

• Seiko 4523-574
• Seiko 7062-376
• Seiko 6339-510
• Seiko 6362-124
• Seiko 5664-251
• Seiko 4453-753
• Seiko 3850-263
• Seiko 7142-882
• Seiko 7147-389
• Seiko 6284-198
• Seiko 6399-325
• Seiko 4410-927