Seiko Cal. 5665 - 738

The Seiko 5665-738 represents an important milestone in Seiko's 1974 lineup. With its 20mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-0b7850c310ab]

Also known as: Tuna, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1974

Related Models

• Seiko 0788-688
• Seiko 5667-708
• Seiko 6236-277
• Seiko 5682-722
• Seiko 0710-598
• Seiko 5217-944
• Seiko 7087-589
• Seiko 3811-569
• Seiko 4546-489
• Seiko 5279-348
• Seiko 6323-450
• Seiko 7092-213