Seiko Cal. 5638 - 993

This Automatic model from 1970 features a 42mm Titanium case. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-7d68ea9a4679]

Also known as: Bullhead, UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1970

Related Models

• Seiko 4543-201
• Seiko 3830-630
• Seiko 6132-553
• Seiko 6381-583
• Seiko 4529-827
• Seiko 6696-685
• Seiko 0798-157
• Seiko 7040-208
• Seiko 5277-680
• Seiko 4464-225
• Seiko 6232-634
• Seiko 6232-166