Seiko Cal. 4427 - 864

This Solar model from 1977 features a 41mm Hardlex-Coated Steel case. It features a Silver dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-3724b0885be5]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1977

Related Models

• Seiko 6355-185
• Seiko 4526-479
• Seiko 4546-545
• Seiko 5246-597
• Seiko 6212-942
• Seiko 5636-848
• Seiko 6172-290
• Seiko 6683-301
• Seiko 6141-263
• Seiko 7147-788
• Seiko 6655-942
• Seiko 5658-776