Seiko Cal. 6690 - 431

Seiko 6690-431

This Hand-Winding model from 1968 features a 36mm Two-Tone case. It features a Champagne dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-d913c85015ad]

Also known as: Panda, Flighty

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
36mm
Case Thickness
13.5mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Champagne
Jewels
20j
Frequency
21,600 bph
Power Reserve
67 hours
Year
1968

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