Seiko Cal. 6638 - 306

The 6638-306 is a sought-after Quartz piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-034541f5752a]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1987

Related Models

• Seiko 5622-572
• Seiko 5233-669
• Seiko 6356-320
• Seiko 3819-243
• Seiko 5617-185
• Seiko 6245-429
• Seiko 6318-919
• Seiko 3818-628
• Seiko 7124-185
• Seiko 6374-168
• Seiko 7129-894
• Seiko 6361-965