Seiko Cal. 6647 - 863

The 6647-863 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-4f3df992fee1]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1978

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