Seiko Cal. 3816 - 256

The Seiko 3816-256 represents an important milestone in Seiko's 1972 lineup. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-5b6057f128e0]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1972

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