Seiko Cal. 5278 - 376

This Automatic model from 1969 features a 40mm Hardlex-Coated Steel case. With its 18mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-dbddf417ba9d]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1969

Related Models

• Seiko 6284-636
• Seiko 5622-652
• Seiko 7186-113
• Seiko 4413-516
• Seiko 6122-261
• Seiko 5619-570
• Seiko 4580-106
• Seiko 5632-667
• Seiko 6640-870
• Seiko 5694-665
• Seiko 7036-647
• Seiko 0785-827