Seiko Cal. 3810 - 556

The 3810-556 is a sought-after Automatic piece from Seiko's golden era. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-33bd88ca3244]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1972

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