Seiko Cal. 5615 - 645

The Seiko 5615-645 represents an important milestone in Seiko's 1979 lineup. Powered by the 5615 caliber with 29j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-d6af9b5c3894]

Also known as: Navigator, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1979

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