Seiko Cal. 6647 - 661

Released in 1969, the Cal. 6647 with design code 661 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-fb26553dc317]

Also known as: Turtle, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

24j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1969

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