Seiko Cal. 6399 - 420

The Seiko 6399-420 represents an important milestone in Seiko's 1966 lineup. Powered by the 6399 caliber with 21j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-80d59c0d33da]

Also known as: Samurai, Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1966

Related Models

• Seiko 7115-296
• Seiko 6131-639
• Seiko 7130-374
• Seiko 6384-405
• Seiko 0740-111
• Seiko 3854-551
• Seiko 7166-201
• Seiko 7154-186
• Seiko 4490-514
• Seiko 6343-116
• Seiko 5219-322
• Seiko 7052-479