Seiko Cal. 6331 - 868

This Hand-Winding model from 1965 features a 46mm Stainless Steel case. Powered by the 6331 caliber with 23j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-b5a721a78fb5]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1965

Related Models

• Seiko 6260-311
• Seiko 7170-701
• Seiko 7090-278
• Seiko 5250-339
• Seiko 6334-414
• Seiko 7182-183
• Seiko 7034-848
• Seiko 4458-385
• Seiko 0725-806
• Seiko 6127-194
• Seiko 4446-880
• Seiko 7047-397