Seiko Cal. 6640 - 319

The Seiko 6640-319 represents an important milestone in Seiko's 1966 lineup. Powered by the 6640 caliber with 26j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-323e4fb34e9c]

Also known as: Panda, Rally

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1966

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