Seiko Cal. 6391 - 242

This Solar model from 1973 features a 45mm Hardlex-Coated Steel case. Powered by the 6391 caliber with 26j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-eb4d2e5fb236]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1973

Related Models

• Seiko 6279-977
• Seiko 4437-293
• Seiko 5214-665
• Seiko 5233-269
• Seiko 5256-704
• Seiko 6229-679
• Seiko 4585-941
• Seiko 5268-144
• Seiko 3894-329
• Seiko 6217-519
• Seiko 3859-543
• Seiko 6686-539