Seiko Cal. 6671 - 987

This Spring Drive model from 1985 features a 45mm Hardlex-Coated Steel case. Powered by the 6671 caliber with 19j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-47697c41dba4]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1985

Related Models

• Seiko 0711-907
• Seiko 0741-113
• Seiko 0771-780
• Seiko 6622-232
• Seiko 6389-806
• Seiko 4478-489
• Seiko 3883-567
• Seiko 7058-942
• Seiko 6340-175
• Seiko 7054-151
• Seiko 6696-273
• Seiko 6213-565