Seiko Cal. 5278 - 607

This Solar model from 1968 features a 42mm Hardlex-Coated Steel case. Powered by the 5278 caliber with 36j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-cf1c79da0d2a]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1968

Related Models

• Seiko 4489-409
• Seiko 4468-620
• Seiko 6327-324
• Seiko 3843-640
• Seiko 4526-357
• Seiko 5269-404
• Seiko 6141-182
• Seiko 6635-921
• Seiko 6132-285
• Seiko 7123-654
• Seiko 3890-994
• Seiko 7092-960