Seiko Cal. 6642 - 964

This Quartz model from 1968 features a 36mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-df130070f0b7]

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1968

Related Models

• Seiko 4591-365
• Seiko 7088-739
• Seiko 7173-167
• Seiko 7070-163
• Seiko 3850-530
• Seiko 7123-395
• Seiko 5687-299
• Seiko 4425-112
• Seiko 6388-641
• Seiko 0750-657
• Seiko 5664-946
• Seiko 4522-917