Seiko Cal. 3897 - 647

This Spring Drive model from 1987 features a 45mm Two-Tone case. Powered by the 3897 caliber with 36j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-eaee63e236ea]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1987

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