Seiko Cal. 6645 - 945

The Seiko 6645-945 represents an important milestone in Seiko's 1977 lineup. Powered by the 6645 caliber with 23j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-5c2f441bc10a]

Also known as: Silverwave, Flighty

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1977

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