Seiko Cal. 6616 - 418

Seiko 6616-418

This Hand-Winding model from 1966 features a 37mm Titanium case. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-a32b359bcb2a]

Also known as: Bullhead, Golden Tuna

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
37mm
Case Thickness
14.7mm
Lug Width
19mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
90m
Dial Color
Navy
Jewels
20j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1966

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