Seiko Cal. 6640 - 362

The Seiko 6640-362 represents an important milestone in Seiko's 1975 lineup. The Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-5826336fcecf]

Also known as: Arnie

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1975

Related Models

• Seiko 6320-906
• Seiko 3888-346
• Seiko 7031-648
• Seiko 5647-812
• Seiko 4526-760
• Seiko 0775-992
• Seiko 4537-807
• Seiko 6238-347
• Seiko 7072-580
• Seiko 7116-735
• Seiko 4418-221
• Seiko 3816-568