Seiko Cal. 6161 - 640

The Seiko 6161-640 represents an important milestone in Seiko's 1968 lineup. With its 20mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-b8e3868de2ad]

Also known as: Crown

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1968

Related Models

• Seiko 6261-817
• Seiko 7153-846
• Seiko 4533-678
• Seiko 6227-683
• Seiko 4498-902
• Seiko 3868-716
• Seiko 4527-822
• Seiko 6673-557
• Seiko 5658-101
• Seiko 5699-500
• Seiko 3845-951
• Seiko 5620-390