Seiko Cal. 6691 - 416

The Seiko 6691-416 represents an important milestone in Seiko's 1967 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-a20b59f44f6a]

Also known as: UFO, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1967

Related Models

• Seiko 7016-131
• Seiko 7125-590
• Seiko 3877-315
• Seiko 7021-314
• Seiko 7152-110
• Seiko 5286-264
• Seiko 5292-642
• Seiko 0771-420
• Seiko 4532-304
• Seiko 6153-254
• Seiko 4589-191
• Seiko 6227-120