Seiko Cal. 3897 - 147

The Seiko 3897-147 represents an important milestone in Seiko's 1972 lineup. Powered by the 3897 caliber with 36j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-e151be82c402]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Cream

Jewels

36j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1972

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