Seiko Cal. 5661 - 997

This Spring Drive model from 1980 features a 37mm Gold-Plated case. It features a Navy dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-05539733c4b4]

Also known as: Shogun, Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

29j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1980

Related Models

• Seiko 4466-801
• Seiko 6326-982
• Seiko 6242-232
• Seiko 5616-925
• Seiko 5623-197
• Seiko 6265-239
• Seiko 6654-619
• Seiko 6236-573
• Seiko 5281-662
• Seiko 3876-564
• Seiko 6253-820
• Seiko 6375-173