Seiko Cal. 6638 - 970

This Hand-Winding model from 1976 features a 39mm PVD Black case. It features a Green dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-0483b9d622d6]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

36j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1976

Related Models

• Seiko 5623-953
• Seiko 6673-560
• Seiko 4445-506
• Seiko 7170-468
• Seiko 5652-683
• Seiko 4541-270
• Seiko 3827-500
• Seiko 4597-541
• Seiko 7088-703
• Seiko 7067-118
• Seiko 6114-859
• Seiko 5235-159