Seiko Cal. 6643 - 963

Seiko 6643-963

This Hand-Winding model from 1974 features a 34mm PVD Black case. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-8e81614116d5]

Also known as: Baby Tuna, Flighty

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
34mm
Case Thickness
14.5mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
170m
Dial Color
White
Jewels
21j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1974

Related Models

seikata-wm-8e81614116d5