Seiko Cal. 3872 - 392

The Seiko 3872-392 represents an important milestone in Seiko's 1970 lineup. Powered by the 3872 caliber with 31j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-37ef57570c1b]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1970

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