Seiko Cal. 3851 - 771

Released in 1977, the Cal. 3851 with design code 771 was part of Seiko's domestic market collection. Powered by the 3851 caliber with 20j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-9ca16ef5c538]

Also known as: Crown, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1977

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