Seiko Cal. 5691 - 488

Released in 1985, the Cal. 5691 with design code 488 was part of Seiko's domestic market collection. It features a Navy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-2e883810a415]

Also known as: Helmet, World Timer

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1985

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