Seiko Cal. 5623 - 959

The Seiko 5623-959 represents an important milestone in Seiko's 1987 lineup. It features a Navy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-7cb37584b581]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1987

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