Seiko Cal. 6635 - 515

Seiko 6635-515

This Quartz model from 1975 features a 45mm Hardlex-Coated Steel case. Powered by the 6635 caliber with 22j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-e38eda8d018d]

Also known as: Tuna, Baby Tuna

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
15.3mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
30m
Dial Color
White
Jewels
22j
Frequency
21,600 bph
Power Reserve
66 hours
Year
1975

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