Seiko Cal. 6678 - 649

Seiko 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

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