Seiko Cal. 6640 - 285

The Seiko 6640-285 represents an important milestone in Seiko's 1970 lineup. Powered by the 6640 caliber with 28j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-16130715f860]

Also known as: Pogue

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1970

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