Seiko Cal. 4520 - 678

The Seiko 4520-678 represents an important milestone in Seiko's 1998 lineup. Powered by the 4520 caliber with 17j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-47d117df43e3]

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1998

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