Seiko Cal. 5640 - 489

The Seiko 5640-489 represents an important milestone in Seiko's 1969 lineup. Powered by the 5640 caliber with 28j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-4ed41cdb4e59]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1969

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