Seiko Cal. 6638 - 989

The Seiko 6638-989 represents an important milestone in Seiko's 1967 lineup. It features a Cream dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-820d5289fad9]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1967

Related Models

• Seiko 3829-331
• Seiko 6661-449
• Seiko 4424-905
• Seiko 5631-446
• Seiko 4412-201
• Seiko 6325-788
• Seiko 3868-579
• Seiko 5654-991
• Seiko 5617-884
• Seiko 6191-811
• Seiko 3885-616
• Seiko 6632-482