Seiko Cal. 3872 - 766

The Seiko 3872-766 represents an important milestone in Seiko's 1971 lineup. Powered by the 3872 caliber with 19j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-b531a563b3a1]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1971

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