Seiko Cal. 3813 - 428

The Seiko 3813-428 represents an important milestone in Seiko's 1970 lineup. It features a Black dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-e64569e73554]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1970

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