Seiko Cal. 5644 - 464

This Automatic model from 1968 features a 38mm Gold-Plated case. It features a Navy dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-ea9ec0101b61]

Also known as: Bullhead, Silverwave

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1968

Related Models

• Seiko 6381-350
• Seiko 7015-385
• Seiko 6387-136
• Seiko 5277-774
• Seiko 6247-764
• Seiko 3842-277
• Seiko 5613-518
• Seiko 5250-802
• Seiko 5671-547
• Seiko 6258-258
• Seiko 6340-322
• Seiko 6359-341