Seiko Cal. 5615 - 551

The Seiko 5615-551 represents an important milestone in Seiko's 1975 lineup. It features a Navy dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-a30c4d792947]

Also known as: Bullhead, Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1975

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