Seiko Cal. 6620 - 507

Seiko 6620-507

This Spring Drive model from 1965 features a 38mm Two-Tone case. Powered by the 6620 caliber with 27j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-60c3e371d604]

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
38mm
Case Thickness
12.4mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
120m
Dial Color
Black
Jewels
27j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1965

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