Seiko Cal. 3813 - 746

The Seiko 3813-746 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-bc4db0f20470]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1977

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