Seiko Cal. 6615 - 631

This Kinetic model from 1965 features a 35mm Stainless Steel case. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-438900f2b651]

Also known as: UFO, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1965

Related Models

• Seiko 6338-330
• Seiko 6164-704
• Seiko 5689-477
• Seiko 4426-805
• Seiko 0714-357
• Seiko 6273-437
• Seiko 6677-769
• Seiko 0753-403
• Seiko 0714-405
• Seiko 4593-663
• Seiko 6171-145
• Seiko 6333-897