Seiko Cal. 3858 - 523

The Seiko 3858-523 represents an important milestone in Seiko's 1970 lineup. It features a Silver dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-d47ca27984ba]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

25j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1970

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