Seiko Cal. 6640 - 434

The 6640-434 is a sought-after Kinetic piece from Seiko's golden era. The Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-9ae0dd06bf1d]

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1966

Related Models

• Seiko 6118-174
• Seiko 3864-875
• Seiko 4557-361
• Seiko 6639-233
• Seiko 4512-265
• Seiko 4435-465
• Seiko 4583-621
• Seiko 5614-525
• Seiko 4421-845
• Seiko 6379-632
• Seiko 0760-341
• Seiko 4569-819