Seiko Cal. 6378 - 872

Seiko 6378-872

This Solar model from 1967 features a 44mm Two-Tone case. Powered by the 6378 caliber with 31j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-f863cd54afa4]

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
44mm
Case Thickness
11.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Burgundy
Jewels
31j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1967

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