Seiko Cal. 5668 - 581

This Automatic model from 1975 features a 40mm Titanium case. It features a Navy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-ed8f1f9aa2cd]

Also known as: Navigator

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1975

Related Models

• Seiko 5284-263
• Seiko 7148-146
• Seiko 3814-404
• Seiko 4574-137
• Seiko 6635-333
• Seiko 5289-451
• Seiko 6147-852
• Seiko 5650-164
• Seiko 5242-188
• Seiko 6231-180
• Seiko 6163-961
• Seiko 6653-712