Seiko Cal. 4457 - 620

This Quartz model from 1975 features a 42mm Hardlex-Coated Steel case. It features a Black dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-439c01ba4272]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1975

Related Models

• Seiko 4491-644
• Seiko 5682-856
• Seiko 5285-956
• Seiko 6236-234
• Seiko 4410-991
• Seiko 6134-833
• Seiko 0728-409
• Seiko 7172-594
• Seiko 3845-189
• Seiko 4458-403
• Seiko 5299-228
• Seiko 6639-184