Seiko Cal. 6644 - 857

The Seiko 6644-857 represents an important milestone in Seiko's 1979 lineup. With its 18mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-f566f8b38633]

Also known as: Panda

Specifications

Movement

Solar

Case Material

Titanium

Case Width

39mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1979

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