Seiko Cal. 6397 - 634

This Solar model from 1988 features a 44mm Stainless Steel case. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-8e414f31219f]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1988

Related Models

• Seiko 6641-137
• Seiko 5299-893
• Seiko 3871-160
• Seiko 6386-478
• Seiko 4443-528
• Seiko 0774-794
• Seiko 5658-898
• Seiko 4510-648
• Seiko 6659-834
• Seiko 7072-169
• Seiko 3857-843
• Seiko 7055-317