Seiko Cal. 6690 - 977

Seiko 6690-977

The 6690-977 is a sought-after Automatic piece from Seiko's golden era. It features a Cream dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-96892498cacf]

Also known as: Tuna, Rally

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
13.0mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
50m
Dial Color
Cream
Jewels
22j
Frequency
28,800 bph
Power Reserve
47 hours
Year
1981

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