Seiko Cal. 6638 - 616

Seiko 6638-616

This Automatic model from 1965 features a 44mm Hardlex-Coated Steel case. Powered by the 6638 caliber with 36j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-e76d12234dec]

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
8.0mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
90m
Dial Color
Burgundy
Jewels
36j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1965

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