Seiko Cal. 6657 - 595

This Spring Drive model from 1971 features a 45mm Gold-Plated case. Powered by the 6657 caliber with 21j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-4220d04367ab]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1971

Related Models

• Seiko 5648-566
• Seiko 6272-704
• Seiko 3845-153
• Seiko 0782-358
• Seiko 4472-420
• Seiko 4579-920
• Seiko 6295-651
• Seiko 4581-181
• Seiko 5692-423
• Seiko 4545-327
• Seiko 3882-282
• Seiko 6288-663