Seiko Cal. 6278 - 656

This Solar model from 1969 features a 44mm Hardlex-Coated Steel case. Powered by the 6278 caliber with 18j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-f7e85899ecdd]

Also known as: Bellmatic, Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1969

Related Models

• Seiko 6341-119
• Seiko 6626-134
• Seiko 7059-459
• Seiko 6170-668
• Seiko 7176-958
• Seiko 5268-721
• Seiko 4531-404
• Seiko 0762-545
• Seiko 0743-458
• Seiko 3845-567
• Seiko 5681-176
• Seiko 3836-580