Seiko Cal. 4491 - 964

The Seiko 4491-964 represents an important milestone in Seiko's 1967 lineup. It features a White dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-37c27bf9cc09]

Also known as: Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1967

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