Seiko Cal. 5665 - 718

The Seiko 5665-718 represents an important milestone in Seiko's 1965 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-08e2c332e533]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1965

Related Models

• Seiko 6667-473
• Seiko 5288-208
• Seiko 7113-974
• Seiko 6631-650
• Seiko 3850-229
• Seiko 5278-230
• Seiko 5223-839
• Seiko 4536-640
• Seiko 6342-596
• Seiko 6324-525
• Seiko 6250-794
• Seiko 6133-860