Seiko Cal. 6639 - 769

The Seiko 6639-769 represents an important milestone in Seiko's 1986 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-21602a89b44c]

Also known as: Silverwave, Navigator

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1986

Related Models

• Seiko 4436-450
• Seiko 6372-303
• Seiko 0768-846
• Seiko 5696-184
• Seiko 7139-325
• Seiko 7088-761
• Seiko 3892-389
• Seiko 4563-902
• Seiko 6651-135
• Seiko 5679-701
• Seiko 6339-779
• Seiko 6143-118