Seiko Cal. 4491 - 550

Released in 1980, the Cal. 4491 with design code 550 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-65fc349fcdc0]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1980

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