Seiko Cal. 6678 - 649

This Automatic model from 1977 features a 40mm Two-Tone case. Powered by the 6678 caliber with 30j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-1ee203c864b9]

Also known as: Sumo, Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1977

Related Models

• Seiko 4455-927
• Seiko 6165-277
• Seiko 0744-735
• Seiko 5681-393
• Seiko 6133-377
• Seiko 4512-841
• Seiko 4428-122
• Seiko 4538-658
• Seiko 6286-647
• Seiko 6329-597
• Seiko 4439-369
• Seiko 6186-964