Seiko Cal. 3820 - 630

The Seiko 3820-630 represents an important milestone in Seiko's 1971 lineup. It features a Silver dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-bf103e21b99b]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1971

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