Seiko Cal. 3872 - 400

The Seiko 3872-400 represents an important milestone in Seiko's 1985 lineup. Powered by the 3872 caliber with 26j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-7a505714b43d]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1985

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