Seiko Cal. 6661 - 745

The 6661-745 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6661 caliber with 25j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-a91ba566fd9e]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1971

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