Seiko Cal. 6690 - 870

Seiko 6690-870

This Quartz model from 1978 features a 36mm PVD Black case. It features a Green dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-6b96707fede8]

Also known as: Silverwave, Baby Tuna

Specifications

Movement
Quartz
Case Material
PVD Black
Case Width
36mm
Case Thickness
8.0mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
170m
Dial Color
Green
Jewels
22j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1978

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