Seiko Cal. 6391 - 457

This Solar model from 1966 features a 38mm Titanium case. Powered by the 6391 caliber with 36j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-166856e1140c]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1966

Related Models

• Seiko 6213-911
• Seiko 3875-372
• Seiko 7172-718
• Seiko 6389-750
• Seiko 4482-657
• Seiko 6255-112
• Seiko 5614-820
• Seiko 6137-860
• Seiko 6195-737
• Seiko 7132-821
• Seiko 5679-369
• Seiko 5654-946