Seiko Cal. 4491 - 777

The Seiko 4491-777 represents an important milestone in Seiko's 1986 lineup. Powered by the 4491 caliber with 22j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-aa4d2a99b16b]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1986

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