Seiko Cal. 3897 - 721

The Seiko 3897-721 represents an important milestone in Seiko's 1967 lineup. It features a Silver dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-566e11d8141f]

Also known as: Monster

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1967

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