Seiko Cal. 3897 - 902

The Seiko 3897-902 represents an important milestone in Seiko's 1971 lineup. It features a Navy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-b11fb308654b]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1971

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