Seiko Cal. 3870 - 506

The Seiko 3870-506 represents an important milestone in Seiko's 1965 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-5c02cf6ee5c4]

Also known as: Samurai, Bullhead

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1965

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