Seiko Cal. 6391 - 900

The 6391-900 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6391 caliber with 32j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-a082845da555]

Also known as: Bullhead, Arnie

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

32j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1982

Related Models

• Seiko 6257-269
• Seiko 0725-698
• Seiko 5679-604
• Seiko 4562-601
• Seiko 7112-944
• Seiko 4497-509
• Seiko 0778-820
• Seiko 6195-298
• Seiko 4442-150
• Seiko 5296-801
• Seiko 3867-344
• Seiko 6690-726