Seiko Cal. 6646 - 671

This Kinetic model from 1965 features a 40mm Titanium case. Powered by the 6646 caliber with 26j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-6b3dc97324ca]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1965

Related Models

• Seiko 6157-578
• Seiko 6389-238
• Seiko 7160-702
• Seiko 5615-176
• Seiko 6152-272
• Seiko 6296-512
• Seiko 6233-324
• Seiko 6648-187
• Seiko 4541-301
• Seiko 5262-476
• Seiko 6653-954
• Seiko 5610-360