Seiko Cal. 4436 - 831

This Quartz model from 1979 features a 45mm Hardlex-Coated Steel case. It features a Navy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-c1ab1a8bf64f]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1979

Related Models

• Seiko 6385-598
• Seiko 4452-388
• Seiko 5670-356
• Seiko 4413-321
• Seiko 3886-114
• Seiko 6158-177
• Seiko 6675-289
• Seiko 3876-620
• Seiko 6321-871
• Seiko 6662-833
• Seiko 7194-636
• Seiko 7048-541