Seiko Cal. 4416 - 831

The Seiko 4416-831 represents an important milestone in Seiko's 1975 lineup. Powered by the 4416 caliber with 36j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-aa9204c13260]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1975

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