Seiko Cal. 6378 - 800

This Spring Drive model from 1966 features a 36mm Hardlex-Coated Steel case. Powered by the 6378 caliber with 20j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-6df7f974fba7]

Also known as: Bullhead, Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1966

Related Models

• Seiko 6170-598
• Seiko 5686-658
• Seiko 3884-433
• Seiko 5221-566
• Seiko 0799-928
• Seiko 4476-544
• Seiko 6391-385
• Seiko 0770-328
• Seiko 0724-496
• Seiko 5278-954
• Seiko 4560-523
• Seiko 0743-606