Seiko Cal. 6646 - 607

Released in 1968, the Cal. 6646 with design code 607 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-4587ea3ab39b]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1968

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