Seiko Cal. 6647 - 834

Seiko 6647-834

The 6647-834 is a sought-after Automatic piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-0c44ee2a654c]

Also known as: Tuna, Crown

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
43mm
Case Thickness
9.0mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
20j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1978

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