Seiko Cal. 6389 - 663

The Seiko 6389-663 represents an important milestone in Seiko's 1969 lineup. The Coin-Edge bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-f9441d91646d]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1969

Related Models

• Seiko 4530-905
• Seiko 4410-353
• Seiko 7061-332
• Seiko 5684-831
• Seiko 6274-364
• Seiko 6354-433
• Seiko 3883-942
• Seiko 5271-160
• Seiko 5649-430
• Seiko 6661-868
• Seiko 6692-268
• Seiko 7150-888