Seiko Cal. 6639 - 464

Seiko 6639-464

This Solar model from 1965 features a 41mm Titanium case. Powered by the 6639 caliber with 31j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-46a0552cd571]

Specifications

Movement
Solar
Case Material
Titanium
Case Width
41mm
Case Thickness
10.9mm
Lug Width
21mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
60m
Dial Color
Navy
Jewels
31j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1965

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seikata-wm-46a0552cd571