Seiko Cal. 5657 - 764

This Quartz model from 1982 features a 37mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-10715d2bf983]

Also known as: Tuna, Goldfeather

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1982

Related Models

• Seiko 0749-844
• Seiko 6291-149
• Seiko 6355-360
• Seiko 4473-702
• Seiko 7166-586
• Seiko 6344-125
• Seiko 5675-544
• Seiko 7018-241
• Seiko 3890-305
• Seiko 7141-496
• Seiko 5610-591
• Seiko 6132-652