Seiko Cal. 6613 - 366

Seiko 6613-366

This Automatic model from 1970 features a 40mm Titanium case. Powered by the 6613 caliber with 22j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-b0a071cc7d34]

Also known as: Tuna, Arnie

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
40mm
Case Thickness
15.9mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
200m
Dial Color
Cream
Jewels
22j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1970

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