Seiko Cal. 6645 - 899

The 6645-899 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6645 caliber with 18j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-223f53b2de08]

Also known as: Helmet, Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Black

Jewels

18j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1981

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