Seiko Cal. 6661 - 641

This Kinetic model from 1967 features a 35mm Gold-Plated case. The Coin-Edge bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-e079c8887ece]

Also known as: Sumo, UFO

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1967

Related Models

• Seiko 5285-145
• Seiko 4498-728
• Seiko 3826-762
• Seiko 6383-780
• Seiko 5685-471
• Seiko 6695-829
• Seiko 3815-106
• Seiko 5221-950
• Seiko 6170-342
• Seiko 0729-243
• Seiko 7133-770
• Seiko 7183-592