Seiko Cal. 6663 - 498

Seiko 6663-498

This Hand-Winding model from 1976 features a 40mm Stainless Steel case. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-6d9c3f2476f4]

Also known as: Helmet, Flighty

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
40mm
Case Thickness
8.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
40m
Dial Color
Green
Jewels
28j
Frequency
21,600 bph
Power Reserve
39 hours
Year
1976

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