Seiko Cal. 6671 - 687

The Seiko 6671-687 represents an important milestone in Seiko's 1975 lineup. Powered by the 6671 caliber with 22j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-5169eeceb0c5]

Also known as: Monster

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1975

Related Models

• Seiko 6122-607
• Seiko 6234-400
• Seiko 4596-200
• Seiko 6673-662
• Seiko 6270-399
• Seiko 6612-550
• Seiko 6118-419
• Seiko 7182-552
• Seiko 4436-156
• Seiko 5648-568
• Seiko 7166-118
• Seiko 3880-638