Seiko Cal. 3831 - 394

The 3831-394 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-83c1a5798c28]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1977

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