Seiko Cal. 3856 - 378

The 3856-378 is a sought-after Solar piece from Seiko's golden era. It features a Champagne dial protected by a Acrylic crystal and offers 120m of water resistance. [seikata-wm-f4e04206bc79]

Also known as: Tuna, Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1971

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