Seiko Cal. 3892 - 307

The Seiko 3892-307 represents an important milestone in Seiko's 1977 lineup. Powered by the 3892 caliber with 32j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-52b6c4cf2eef]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1977

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