Seiko Cal. 6644 - 878

The 6644-878 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6644 caliber with 22j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-d33187b61d56]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1987

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