Seiko Cal. 6644 - 300

Released in 1981, the Cal. 6644 with design code 300 was part of Seiko's domestic market collection. It features a Black dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-ee3ed1c1bfec]

Also known as: Turtle, Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1981

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