Seiko Cal. 3831 - 777

The Seiko 3831-777 represents an important milestone in Seiko's 1972 lineup. It features a Navy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-1635a4a0befc]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1972

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