Seiko Cal. 6681 - 888

This Spring Drive model from 1969 features a 40mm Gold-Plated case. Powered by the 6681 caliber with 17j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-5e0b15bd62b3]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1969

Related Models

• Seiko 6117-544
• Seiko 7181-754
• Seiko 6158-586
• Seiko 6175-955
• Seiko 0743-816
• Seiko 4482-289
• Seiko 3849-686
• Seiko 0788-821
• Seiko 6190-581
• Seiko 7134-970
• Seiko 6636-271
• Seiko 6663-703